diff --git a/CHANGELOG.md b/CHANGELOG.md
index 87ce669..d1c7c3c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.4.6] - 2025-12-09
+
+### Fixed
+- 修复：内置TaskDrawer中负责人列表可以外部初始化
+- Fixed: The assignee list in the built-in TaskDrawer can be initialized externally
+
 ## [1.4.5] - 2025-12-06
 
 ### Changed
diff --git a/README-EN.md b/README-EN.md
index 1118b09..9b67581 100644
--- a/README-EN.md
+++ b/README-EN.md
@@ -23,7 +23,8 @@
 
 <p align="center">
   <a href="./README.md">中文</a> | 
-  <a href="./README-EN.md">English</a>
+  <a href="./README-EN.md">English</a> | 
+  <a href="./CHANGELOG.md">Release Notes</a>
 </p>
 
 <p align="center">A modern Vue 3 Gantt chart component library providing complete solutions for project management and task scheduling</p>
@@ -188,8 +189,9 @@ npm run dev
 | `useDefaultDrawer`          | `boolean` | `true`  | Whether to use the built-in task edit drawer (TaskDrawer)                 |
 | `useDefaultMilestoneDialog` | `boolean` | `true`  | Whether to use the built-in milestone edit dialog (MilestoneDialog)       |
 | `autoSortByStartDate`       | `boolean` | `false` | Whether to automatically sort tasks by start date                         |
-| `allowDragAndResize`        | `boolean` | `true`  | Whether to allow dragging and resizing tasks/milestones                   |
-| `enableTaskRowMove`        | `boolean` | `false`  | Whether to alloww dragging and dropping TaskRow  
+| `allowDragAndResize`        | `boolean`                                                                             | `true`  | Whether to allow dragging and resizing tasks/milestones                   |
+| `enableTaskRowMove`         | `boolean`                                                                             | `false` | Whether to allow dragging and dropping TaskRow                            |
+| `assigneeOptions`           | `Array<{ key?: string \| number; value: string \| number; label: string }>`          | `[]`    | Assignee dropdown options in task edit drawer          |
 
 #### Configuration Object Props
 
@@ -251,7 +253,7 @@ For complete event documentation, see:
 ```vue
 <template>
   <div style="height: 600px;">
-    <GanttChart :tasks="tasks" />
+    <GanttChart :tasks="tasks" :assignee-options="assigneeOptions" />
   </div>
 </template>
 
@@ -269,6 +271,12 @@ const tasks = ref([
     progress: 100,
   },
 ])
+
+const assigneeOptions = ref([
+  { value: 'alice', label: 'Alice' },
+  { value: 'bob', label: 'Bob' },
+  { value: 'charlie', label: 'Charlie' },
+])
 </script>
 ```
 
@@ -277,7 +285,7 @@ const tasks = ref([
 ```vue
 <template>
   <div style="height: 600px;">
-    <GanttChart :tasks="tasks" :milestones="milestones" />
+    <GanttChart :tasks="tasks" :milestones="milestones" :assignee-options="assigneeOptions" />
   </div>
 </template>
 
@@ -305,6 +313,12 @@ const milestones = ref([
     icon: 'diamond',
   },
 ])
+
+const assigneeOptions = ref([
+  { value: 'alice', label: 'Alice' },
+  { value: 'bob', label: 'Bob' },
+  { value: 'charlie', label: 'Charlie' },
+])
 </script>
 ```
 
@@ -325,6 +339,7 @@ const milestones = ref([
         :tasks="tasks"
         :milestones="milestones"
         :show-toolbar="false"
+        :assignee-options="assigneeOptions"
         @task-added="handleTaskAdded"
         @milestone-saved="handleMilestoneSaved"
       />
@@ -340,6 +355,12 @@ import 'jordium-gantt-vue3/dist/assets/jordium-gantt-vue3.css'
 const tasks = ref([])
 const milestones = ref([])
 
+const assigneeOptions = ref([
+  { value: 'alice', label: 'Alice' },
+  { value: 'bob', label: 'Bob' },
+  { value: 'charlie', label: 'Charlie' },
+])
+
 const addTask = () => {
   const newTask = {
     id: Date.now(),
@@ -387,7 +408,8 @@ Tasks are the core elements of the Gantt chart. The component provides complete
 | `endDate`          | `string`   | -        | -           | End date, format: 'YYYY-MM-DD' or 'YYYY-MM-DD HH:mm'                                                                                                                                |
 | `progress`         | `number`   | -        | `0`         | Task progress, range 0-100                                                                                                                                                          |
 | `predecessor`      | `number[]` | -        | -           | Array of predecessor task IDs, standard format: `[1, 2, 3]`<br/>**Compatible formats**: Also supports string `'1,2,3'` or string array `['1', '2', '3']`, component will auto-parse |
-| `assignee`         | `string`   | -        | -           | Task assignee                                                                                                                                                                       |
+| `assignee`         | `string`   | -        | -           | Task assignee, used as the value binding for the assignee dropdown menu                                                                                                              |
+| `assigneeName`     | `string`   | -        | -           | Task assignee name, automatically obtained from the label in the bound `assigneeOptions` dataset; for custom display, you can set it in the `task-added` callback event of GanttChart |
 | `avatar`           | `string`   | -        | -           | Avatar URL of task assignee                                                                                                                                                         |
 | `estimatedHours`   | `number`   | -        | -           | Estimated hours                                                                                                                                                                     |
 | `actualHours`      | `number`   | -        | -           | Actual hours                                                                                                                                                                        |
@@ -426,7 +448,8 @@ Tasks are the core elements of the Gantt chart. The component provides complete
 | `taskBarConfig`       | `TaskBarConfig`  | `{}`        | Task bar style configuration, see [TaskBarConfig Configuration](#taskbarconfig-configuration) |
 | `taskListConfig`      | `TaskListConfig` | `undefined` | Task list configuration, see [TaskListConfig Configuration](#tasklistconfig-configuration)    |
 | `autoSortByStartDate` | `boolean`        | `false`     | Whether to automatically sort tasks by start date                                             |
-| `enableTaskRowMove`        | `boolean` | `false`  | Whether to alloww dragging and dropping TaskRow  
+| `enableTaskRowMove`        | `boolean` | `false`  | Whether to alloww dragging and dropping TaskRow  |
+| `assigneeOptions`           | `Array<{ key?: string \| number; value: string \| number; label: string }>`          | `[]`    | Assignee dropdown options in task edit drawer          |
 
 **Configuration Notes**:
 
@@ -467,6 +490,7 @@ Tasks are the core elements of the Gantt chart. The component provides complete
   <div style="height: 600px;">
     <GanttChart
       :tasks="tasks"
+      :assignee-options="assigneeOptions"
       @add-task="handleAddTask"
       @task-added="handleTaskAdded"
       @task-updated="handleTaskUpdated"
@@ -504,6 +528,12 @@ const tasks = ref<Task[]>([
   },
 ])
 
+const assigneeOptions = ref([
+  { value: 'alice', label: 'Alice' },
+  { value: 'bob', label: 'Bob' },
+  { value: 'charlie', label: 'Charlie' },
+])
+
 // Toolbar "Add Task" button click event
 const handleAddTask = () => {
   console.log('Preparing to add task...')
@@ -556,6 +586,7 @@ Tasks can configure predecessors via the `predecessor` field, and the component
 <template>
   <GanttChart
     :tasks="tasks"
+    :assignee-options="assigneeOptions"
     @predecessor-added="handlePredecessorAdded"
     @successor-added="handleSuccessorAdded"
   />
@@ -618,6 +649,12 @@ const tasks = ref<Task[]>([
   },
 ])
 
+const assigneeOptions = ref([
+  { value: 'alice', label: 'Alice' },
+  { value: 'bob', label: 'Bob' },
+  { value: 'charlie', label: 'Charlie' },
+])
+
 // Triggered when adding predecessor via context menu
 const handlePredecessorAdded = (event: { targetTask: Task; newTask: Task }) => {
   console.log(`Task [${event.targetTask.name}] added predecessor [${event.newTask.name}]`)
@@ -671,6 +708,7 @@ Suitable for scenarios requiring complete custom control bar:
       :show-toolbar="false"
       :use-default-drawer="true"
       :use-default-milestone-dialog="true"
+      :assignee-options="assigneeOptions"
       @add-task="handleAddTask"
       @add-milestone="handleAddMilestone"
       @task-added="handleTaskAdded"
@@ -686,6 +724,12 @@ import 'jordium-gantt-vue3/dist/assets/jordium-gantt-vue3.css'
 const tasks = ref([])
 const milestones = ref([])
 
+const assigneeOptions = ref([
+  { value: 'alice', label: 'Alice' },
+  { value: 'bob', label: 'Bob' },
+  { value: 'charlie', label: 'Charlie' },
+])
+
 // Custom button triggers event (component will respond and open built-in editor)
 const triggerAddTask = () => {
   // Directly trigger component's add-task event
@@ -729,6 +773,7 @@ Allow users to adjust task hierarchy and order by dragging TaskRow:
     <GanttChart
       :tasks="tasks"
       :enable-task-row-move="true"
+      :assignee-options="assigneeOptions"
       @task-row-moved="handleTaskRowMoved"
     />
   </div>
@@ -765,6 +810,12 @@ const tasks = ref<Task[]>([
   },
 ])
 
+const assigneeOptions = ref([
+  { value: 'alice', label: 'Alice' },
+  { value: 'bob', label: 'Bob' },
+  { value: 'charlie', label: 'Charlie' },
+])
+
 // Task row drag completed event (optional)
 const handleTaskRowMoved = async (payload: {
   draggedTask: Task
@@ -1248,6 +1299,54 @@ const handleDelete = () => {
 
 This section details the configuration options and extension capabilities of the GanttChart component, including Component Configuration, Theme & Internationalization, and Custom Extensions.
 
+### Task Type Definition
+
+Task type (`type` field) is used to distinguish different types of tasks, and the component internally executes different logic based on the type.
+
+#### Built-in Task Types
+
+| Type    | Description   | Default |
+| ------- | ------------- | ------- |
+| `story` | User Story    | -       |
+| `task`  | Regular Task  | ✅      |
+| `bug`   | Bug/Issue     | -       |
+
+#### Feature Differences
+
+Different task types have different functional characteristics in the component:
+
+| Feature              | story | task | bug |
+| -------------------- | ----- | ---- | --- |
+| Can be parent task   | ✅    | ✅   | ❌  |
+| Can be predecessor   | ❌    | ✅   | ❌  |
+| Timer support        | ❌    | ✅   | ✅  |
+| Auto parent task     | ✅    | ❌   | ❌  |
+| Special delete hint  | ✅    | ❌   | ❌  |
+
+#### Important Notes
+
+> ⚠️ **Important**
+>
+> 1. Task type values are used for internal component logic, **do not modify** these enum values arbitrarily
+> 2. When customizing TaskDrawer, you must maintain these three enum values: `story`, `task`, `bug`
+> 3. For additional business labels, use custom property fields such as: `customType`, `category`, `label`, etc.
+
+**Example: Using Custom Labels**
+
+```typescript
+const tasks = ref([
+  {
+    id: 1,
+    name: 'Requirements Analysis',
+    type: 'task', // Keep built-in component type
+    customType: 'requirement', // Custom business type
+    category: 'analysis', // Custom category
+    startDate: '2025-01-01',
+    endDate: '2025-01-10',
+  },
+])
+```
+
 ### Component Configuration
 
 #### ToolbarConfig (Toolbar Configuration)
@@ -2199,5 +2298,5 @@ View the complete [Contributors list](./CONTRIBUTORS.md)。
 ---
 
 <p align="center">
-  <sub>If this project helps you, please give it a ⭐️ to support it!</sub>
+  If this project helps you, please give it a ⭐️ to support it!
 </p>
diff --git a/README.md b/README.md
index a479489..dfc8467 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,8 @@
 
 <p align="center">
   <a href="./README.md">中文</a> | 
-  <a href="./README-EN.md">English</a>
+  <a href="./README-EN.md">English</a> | 
+  <a href="./CHANGELOG.md">更新日志</a>
 </p>
 
 <p align="center">现代化的 Vue 3 甘特图组件库，为项目管理和任务调度提供完整解决方案</p>
@@ -178,16 +179,17 @@ npm run dev
 
 #### 基础属性
 
-| 属性名                      | 类型      | 默认值  | 说明                                                           |
-| --------------------------- | --------- | ------- | -------------------------------------------------------------- |
-| `tasks`                     | `Task[]`  | `[]`    | 任务数据数组                                                   |
-| `milestones`                | `Task[]`  | `[]`    | 里程碑数据数组（注意：类型为 Task[]，需设置 type='milestone'） |
-| `showToolbar`               | `boolean` | `true`  | 是否显示工具栏                                                 |
-| `useDefaultDrawer`          | `boolean` | `true`  | 是否使用内置任务编辑抽屉（TaskDrawer）                         |
-| `useDefaultMilestoneDialog` | `boolean` | `true`  | 是否使用内置里程碑编辑对话框（MilestoneDialog）                |
-| `autoSortByStartDate`       | `boolean` | `false` | 是否根据开始时间自动排序任务                                   |
-| `allowDragAndResize`        | `boolean` | `true`  | 是否允许拖拽和调整任务/里程碑大小                              |
-| `enableTaskRowMove`        | `boolean` | `false`  | 是否允许拖拽和摆放TaskRow                              |
+| 属性名                      | 类型                                                                                      | 默认值  | 说明                                                           |
+| --------------------------- | ----------------------------------------------------------------------------------------- | ------- | -------------------------------------------------------------- |
+| `tasks`                     | `Task[]`                                                                                  | `[]`    | 任务数据数组                                                   |
+| `milestones`                | `Task[]`                                                                                  | `[]`    | 里程碑数据数组（注意：类型为 Task[]，需设置 type='milestone'） |
+| `showToolbar`               | `boolean`                                                                                 | `true`  | 是否显示工具栏                                                 |
+| `useDefaultDrawer`          | `boolean`                                                                                 | `true`  | 是否使用内置任务编辑抽屉（TaskDrawer）                         |
+| `useDefaultMilestoneDialog` | `boolean`                                                                                 | `true`  | 是否使用内置里程碑编辑对话框（MilestoneDialog）                |
+| `autoSortByStartDate`       | `boolean`                                                                                 | `false` | 是否根据开始时间自动排序任务                                   |
+| `allowDragAndResize`        | `boolean`                                                                                 | `true`  | 是否允许拖拽和调整任务/里程碑大小                              |
+| `enableTaskRowMove`         | `boolean`                                                                                 | `false` | 是否允许拖拽和摆放TaskRow                                      |
+| `assigneeOptions`           | `Array<{ key?: string \| number; value: string \| number; label: string }>`               | `[]`    | 任务编辑抽屉中负责人下拉菜单的选项列表          | 
 
 #### 配置对象属性
 
@@ -249,7 +251,7 @@ npm run dev
 ```vue
 <template>
   <div style="height: 600px;">
-    <GanttChart :tasks="tasks" />
+    <GanttChart :tasks="tasks" :assignee-options="assigneeOptions" />
   </div>
 </template>
 
@@ -267,6 +269,12 @@ const tasks = ref([
     progress: 100,
   },
 ])
+
+const assigneeOptions = ref([
+  { value: 'zhangsan', label: '张三' },
+  { value: 'lisi', label: '李四' },
+  { value: 'wangwu', label: '王五' },
+])
 </script>
 ```
 
@@ -275,7 +283,7 @@ const tasks = ref([
 ```vue
 <template>
   <div style="height: 600px;">
-    <GanttChart :tasks="tasks" :milestones="milestones" />
+    <GanttChart :tasks="tasks" :milestones="milestones" :assignee-options="assigneeOptions" />
   </div>
 </template>
 
@@ -303,6 +311,12 @@ const milestones = ref([
     icon: 'diamond',
   },
 ])
+
+const assigneeOptions = ref([
+  { value: 'zhangsan', label: '张三' },
+  { value: 'lisi', label: '李四' },
+  { value: 'wangwu', label: '王五' },
+])
 </script>
 ```
 
@@ -323,6 +337,7 @@ const milestones = ref([
         :tasks="tasks"
         :milestones="milestones"
         :show-toolbar="false"
+        :assignee-options="assigneeOptions"
         @task-added="handleTaskAdded"
         @milestone-saved="handleMilestoneSaved"
       />
@@ -338,6 +353,12 @@ import 'jordium-gantt-vue3/dist/assets/jordium-gantt-vue3.css'
 const tasks = ref([])
 const milestones = ref([])
 
+const assigneeOptions = ref([
+  { value: 'zhangsan', label: '张三' },
+  { value: 'lisi', label: '李四' },
+  { value: 'wangwu', label: '王五' },
+])
+
 const addTask = () => {
   const newTask = {
     id: Date.now(),
@@ -385,7 +406,8 @@ const handleMilestoneSaved = milestone => {
 | `endDate`          | `string`   | -    | -           | 结束日期，格式：'YYYY-MM-DD' 或 'YYYY-MM-DD HH:mm'                                                                              |
 | `progress`         | `number`   | -    | `0`         | 任务进度，范围 0-100                                                                                                            |
 | `predecessor`      | `number[]` | -    | -           | 前置任务 ID 数组，标准格式：`[1, 2, 3]`<br/>**兼容格式**：也支持字符串 `'1,2,3'` 或字符串数组 `['1', '2', '3']`，组件会自动解析 |
-| `assignee`         | `string`   | -    | -           | 任务负责人                                                                                                                      |
+| `assignee`         | `string`   | -    | -           | 任务负责人，用作负责人下拉菜单的值绑定                                                                                                                      |
+| `assigneeName`         | `string`   | -    | -           | 任务负责人姓名，自动从绑定的数据集`assigneeOptions`中获取Label作为显示，如果需要自定义，可以在GanttChart回调事件`task-added`中自定义信息                                                                                                                      |
 | `avatar`           | `string`   | -    | -           | 任务负责人头像 URL                                                                                                              |
 | `estimatedHours`   | `number`   | -    | -           | 预估工时（小时）                                                                                                                |
 | `actualHours`      | `number`   | -    | -           | 实际工时（小时）                                                                                                                |
@@ -424,7 +446,8 @@ const handleMilestoneSaved = milestone => {
 | `taskBarConfig`       | `TaskBarConfig`  | `{}`        | 任务条样式配置，详见 [TaskBarConfig 配置](#taskbarconfig-配置) |
 | `taskListConfig`      | `TaskListConfig` | `undefined` | 任务列表配置，详见 [TaskListConfig 配置](#tasklistconfig-配置) |
 | `autoSortByStartDate` | `boolean`        | `false`     | 是否根据开始时间自动排序任务                                   |
-| `enableTaskRowMove`        | `boolean` | `false`  | 是否允许拖拽和摆放TaskRow   
+| `enableTaskRowMove`        | `boolean` | `false`  | 是否允许拖拽和摆放TaskRow   |
+| `assigneeOptions`           | `Array<{ key?: string \| number; value: string \| number; label: string }>`               | `[]`    | 任务编辑抽屉中负责人下拉菜单的选项列表          | 
 
 **配置说明**：
 
@@ -465,6 +488,7 @@ const handleMilestoneSaved = milestone => {
   <div style="height: 600px;">
     <GanttChart
       :tasks="tasks"
+      :assignee-options="assigneeOptions"
       @add-task="handleAddTask"
       @task-added="handleTaskAdded"
       @task-updated="handleTaskUpdated"
@@ -502,6 +526,12 @@ const tasks = ref<Task[]>([
   },
 ])
 
+const assigneeOptions = ref([
+  { value: 'zhangsan', label: '张三' },
+  { value: 'lisi', label: '李四' },
+  { value: 'wangwu', label: '王五' },
+])
+
 // 工具栏"添加任务"按钮点击事件
 const handleAddTask = () => {
   console.log('准备新增任务...')
@@ -554,6 +584,7 @@ const handleTaskDragEnd = (task: Task) => {
 <template>
   <GanttChart
     :tasks="tasks"
+    :assignee-options="assigneeOptions"
     @predecessor-added="handlePredecessorAdded"
     @successor-added="handleSuccessorAdded"
   />
@@ -616,6 +647,12 @@ const tasks = ref<Task[]>([
   },
 ])
 
+const assigneeOptions = ref([
+  { value: 'zhangsan', label: '张三' },
+  { value: 'lisi', label: '李四' },
+  { value: 'wangwu', label: '王五' },
+])
+
 // 通过右键菜单添加前置任务时触发
 const handlePredecessorAdded = (event: { targetTask: Task; newTask: Task }) => {
   console.log(`任务 [${event.targetTask.name}] 添加了前置任务 [${event.newTask.name}]`)
@@ -669,6 +706,7 @@ const handleSuccessorAdded = (event: { targetTask: Task; newTask: Task }) => {
       :show-toolbar="false"
       :use-default-drawer="true"
       :use-default-milestone-dialog="true"
+      :assignee-options="assigneeOptions"
       @add-task="handleAddTask"
       @add-milestone="handleAddMilestone"
       @task-added="handleTaskAdded"
@@ -684,6 +722,12 @@ import 'jordium-gantt-vue3/dist/assets/jordium-gantt-vue3.css'
 const tasks = ref([])
 const milestones = ref([])
 
+const assigneeOptions = ref([
+  { value: 'zhangsan', label: '张三' },
+  { value: 'lisi', label: '李四' },
+  { value: 'wangwu', label: '王五' },
+])
+
 // 自定义按钮触发事件（组件会响应并打开内置编辑器）
 const triggerAddTask = () => {
   // 直接触发组件的 add-task 事件
@@ -727,6 +771,7 @@ const handleTaskAdded = e => {
     <GanttChart
       :tasks="tasks"
       :enable-task-row-move="true"
+      :assignee-options="assigneeOptions"
       @task-row-moved="handleTaskRowMoved"
     />
   </div>
@@ -763,6 +808,12 @@ const tasks = ref<Task[]>([
   },
 ])
 
+const assigneeOptions = ref([
+  { value: 'zhangsan', label: '张三' },
+  { value: 'lisi', label: '李四' },
+  { value: 'wangwu', label: '王五' },
+])
+
 // 任务行拖拽完成事件（可选）
 const handleTaskRowMoved = async (payload: {
   draggedTask: Task
@@ -1239,6 +1290,54 @@ const handleDelete = () => {
 
 本章节详细介绍 GanttChart 组件的配置选项和扩展能力，包括组件配置、主题与国际化、自定义扩展三个部分。
 
+### 任务类型定义
+
+任务类型（`type` 字段）用于区分不同类型的任务，组件内部会根据类型执行不同的逻辑判断。
+
+#### 内置任务类型
+
+| 类型值  | 说明       | 默认值 |
+| ------- | ---------- | ------ |
+| `story` | 用户故事   | -      |
+| `task`  | 普通任务   | ✅     |
+| `bug`   | 缺陷/问题  | -      |
+
+#### 功能区分
+
+不同任务类型在组件中具有不同的功能特性：
+
+| 功能             | story | task | bug |
+| ---------------- | ----- | ---- | --- |
+| 可作为上级任务   | ✅    | ✅   | ❌  |
+| 可作为前置任务   | ❌    | ✅   | ❌  |
+| 支持计时器       | ❌    | ✅   | ✅  |
+| 自动视为父任务   | ✅    | ❌   | ❌  |
+| 删除时特殊提示   | ✅    | ❌   | ❌  |
+
+#### 注意事项
+
+> ⚠️ **重要提示**
+>
+> 1. 任务类型值为组件内置判断使用，**请勿随意修改**这些枚举值
+> 2. 客制化 TaskDrawer 时，必须保持 `story`、`task`、`bug` 这三个枚举值
+> 3. 如需添加其他业务标签，建议使用自定义属性字段，例如：`customType`、`category`、`label` 等
+
+**示例：使用自定义标签**
+
+```typescript
+const tasks = ref([
+  {
+    id: 1,
+    name: '需求分析',
+    type: 'task', // 保持组件内置类型
+    customType: 'requirement', // 自定义业务类型
+    category: 'analysis', // 自定义分类
+    startDate: '2025-01-01',
+    endDate: '2025-01-10',
+  },
+])
+```
+
 ### 组件配置
 
 #### ToolbarConfig（工具栏配置）
@@ -2190,5 +2289,5 @@ jordium-gantt-vue3/
 ---
 
 <p align="center">
-  <sub>如果这个项目对你有帮助，请给一个 ⭐️ 支持一下！</sub>
+  如果这个项目对你有帮助，请给一个 ⭐️ 支持一下！
 </p>
diff --git a/demo/App.vue b/demo/App.vue
index cf39f1e..2ec1a85 100644
--- a/demo/App.vue
+++ b/demo/App.vue
@@ -187,6 +187,18 @@ const allowDragAndResize = ref(true)
 // 控制是否启用TaskRow拖拽移动
 const enableTaskRowMove = ref(true)
 
+// 指派人员选项列表
+const assigneeOptions = ref([
+  { value: 'zhangsan', label: '张三' },
+  { value: 'lisi', label: '李四' },
+  { value: 'wangwu', label: '王五' },
+  { value: 'zhaoliu', label: '赵六' },
+  { value: 'qianqi', label: '钱七' },
+  { key: 'user_sunba', value: 'sunba', label: '孙八' }, // 示例：使用自定义 key
+  { value: 'zhoujiu', label: '周九' },
+  { value: 'wushi', label: '吴十' },
+])
+
 // TaskBar配置
 const taskBarOptions = ref({
   showAvatar: true,
@@ -1088,6 +1100,7 @@ const handleTaskRowMoved = async (payload: {
         :use-default-milestone-dialog="true"
         :allow-drag-and-resize="allowDragAndResize"
         :enable-task-row-move="enableTaskRowMove"
+        :assignee-options="assigneeOptions"
         :on-export-csv="handleCustomCsvExport"
         :on-language-change="handleLanguageChange"
         :on-theme-change="handleThemeChange"
diff --git a/demo/version-history.json b/demo/version-history.json
index 4aa8e49..f856540 100644
--- a/demo/version-history.json
+++ b/demo/version-history.json
@@ -342,5 +342,17 @@
       "Optimized: Task item move and drag-and-drop functionality in the task list",
       "<span style=\"font-weight: bold; color: #f00;\">Special thanks to jun201607@github for their valuable use and feedback</span>"
     ]
+  },
+  {
+    "version": "1.4.6",
+    "date": "2025-12-09",
+    "notes": [
+      "修复：内置TaskDrawer中负责人列表可以外部初始化",
+      "修复：未设置startDate和endDate时，任务无法正确显示的问题",
+      "<span style=\"font-weight: bold; color: #f00;\">特别感谢 yue-xiaochuan & YQ6494@gitee的使用及反馈的宝贵意见</span>",
+      "Fixed: The assignee list in the built-in TaskDrawer can be initialized externally",
+      "Fixed: The issue where tasks could not be displayed correctly when startDate and endDate were not set",
+      "<span style=\"font-weight: bold; color: #f00;\">Special thanks to yue-xiaochuan & YQ6494@gitee for their valuable use and feedback</span>"
+    ]
   }
 ]
diff --git a/npm-demo/src/components/GanttTest.vue b/npm-demo/src/components/GanttTest.vue
index 8132ba0..839d7bd 100644
--- a/npm-demo/src/components/GanttTest.vue
+++ b/npm-demo/src/components/GanttTest.vue
@@ -60,6 +60,15 @@ const availableColumns = ref<TaskListColumnConfig[]>([
   { key: 'progress', label: '进度', visible: true },
   { key: 'department', label: '部门', visible: true, width: 200 },
   { key: 'departmentCode', label: '部门编号', visible: true },
+  { key: 'assigneeName', label: '负责人', visible: true },
+])
+
+// 使用内置TaskDrawer组件的时候，可以传入负责人选项
+// 请先设置GanttChart组件属性use-default-drawer="true"
+const assigneeOptions = ref([
+  { value: 'zhangsan', label: '张三' },
+  { value: 'lisi', label: '李四' },
+  { value: 'wangwu', label: '王五' },
 ])
 
 // TaskList宽度配置示例
@@ -140,16 +149,16 @@ const handleTaskRowMoved = async (payload: {
   newParent: Task | null
 }) => {
   const { draggedTask, targetTask, position, oldParent, newParent } = payload
-  
+
   // 组件已自动完成任务移动、parentId更新和TaskList/Timeline同步
   // 监听此事件为完全可选，仅用于：
-  
+
   // 1. 显示自定义提示消息
   const oldParentName = oldParent?.name || '根目录'
   const newParentName = newParent?.name || '根目录'
   const positionText = position === 'after' ? '在目标任务之后' : '作为目标任务的子任务'
   alert(`任务 [${draggedTask.name}] 已从 [${oldParentName}] 移动到 [${newParentName}] (${positionText})`, 'success')
-  
+
   // 2. 调用后端 API 保存新的任务层级关系
   try {
     await api.updateTaskHierarchy({
@@ -163,17 +172,36 @@ const handleTaskRowMoved = async (payload: {
     console.error('保存任务层级失败:', error)
     alert('保存失败，请刷新页面')
   }
-  
+
   // 3. 触发其他业务逻辑（如更新关联数据、记录操作日志等）
   // ...
 }
+
+// 任务添加后回调
+const onTaskAdded = (res) => {
+  const addedTask = tasks.value.find(t => t.id === res.task.id);
+  if (addedTask) {
+    // 使用addedTask.assignee去查找assigneeOptions的label进行赋值
+    const assigneeOption = assigneeOptions.value.find(option => option.value === addedTask.assignee);
+    if (assigneeOption) {
+      addedTask.assigneeName = assigneeOption.label;
+    }
+  } else {
+    // 使用addedTask.assignee去查找assigneeOptions的label进行赋值
+    const assigneeOption = assigneeOptions.value.find(option => option.value === res.task.assignee);
+    if (assigneeOption) {
+      res.task.assigneeName = assigneeOption.label;
+    }
+    tasks.value.push(res.task);
+  }
+};
 </script>
 
 <template>
   <div>
     <div style="height: 600px;">
-      <GanttChart 
-        :tasks="tasks" 
+      <GanttChart
+        :tasks="tasks"
         :milestones="milestones"
         :task-list-config="taskListConfig"
         :toolbar-config="toolbarConfig"
@@ -182,12 +210,13 @@ const handleTaskRowMoved = async (payload: {
         :locale-messages="customMessages"
         :allow-drag-and-resize="true"
         :enable-task-row-move="true"
+        :assignee-options="assigneeOptions"
         @task-row-moved="handleTaskRowMoved"
-        @add-task="showAddTaskDrawer = true"
         @add-milestone="showAddMilestoneDialog = true"
         @task-double-click="onTaskDblclick"
         @task-click="onTaskClick"
         @milestone-double-click="onMilestoneDblclick"
+        @task-added="onTaskAdded"
       >
     </GanttChart>
     </div>
@@ -196,7 +225,7 @@ const handleTaskRowMoved = async (payload: {
       <button class="btn btn-primary" @click="showAddTaskDrawer = true">添加任务</button>
       <button class="btn btn-primary" @click="showAddMilestoneDialog = true">添加里程碑</button>
     </div>
-    
+
     <!-- 自定义抽屉组件 (原生HTML替代 el-drawer) -->
     <div v-if="showAddTaskDrawer" class="drawer-overlay" @click="showAddTaskDrawer = false">
       <div class="drawer-container" @click.stop>
@@ -204,24 +233,24 @@ const handleTaskRowMoved = async (payload: {
           <h3>自定义添加任务组件</h3>
           <button class="close-btn" @click="showAddTaskDrawer = false">×</button>
         </div>
-        
+
         <div class="drawer-body">
           <div class="form-item">
             <label>任务名称:</label>
             <input v-model="newTask.name" type="text" placeholder="请输入任务名称" />
           </div>
-          
+
           <div class="form-item">
             <label>开始日期:</label>
             <input v-model="newTask.startDate" type="date" />
           </div>
-          
+
           <div class="form-item">
             <label>结束日期:</label>
             <input v-model="newTask.endDate" type="date" />
           </div>
         </div>
-        
+
         <div class="drawer-footer">
           <button class="btn btn-primary" @click="addTask">确定</button>
           <button class="btn btn-default" @click="showAddTaskDrawer = false">取消</button>
@@ -230,9 +259,9 @@ const handleTaskRowMoved = async (payload: {
     </div>
 
     <!-- 自定义Dialog组件基于element plus -->
-    <el-dialog 
-      title="自定义添加里程碑组件 - Element Plus" 
-      v-model="showAddMilestoneDialog" 
+    <el-dialog
+      title="自定义添加里程碑组件 - Element Plus"
+      v-model="showAddMilestoneDialog"
       width="400px"
       @close="newTask = { name: '', startDate: '', endDate: '' }"
     >
@@ -252,7 +281,7 @@ const handleTaskRowMoved = async (payload: {
         <el-button @click="addMilestone">确定</el-button>
         <el-button @click="showAddMilestoneDialog = false">取消</el-button>
       </template>
-    </el-dialog>  
+    </el-dialog>
   </div>
 </template>
 
@@ -403,4 +432,4 @@ const handleTaskRowMoved = async (payload: {
   from { transform: translateX(100%); }
   to { transform: translateX(0); }
 }
-</style>
\ No newline at end of file
+</style>
diff --git a/npm-webpack-demo/src/App.vue b/npm-webpack-demo/src/App.vue
index 6959968..ec08be0 100644
--- a/npm-webpack-demo/src/App.vue
+++ b/npm-webpack-demo/src/App.vue
@@ -1,150 +1,3 @@
-<script setup lang="ts">
-import { ref } from 'vue'
-import { GanttChart } from 'jordium-gantt-vue3'
-import 'jordium-gantt-vue3/dist/assets/jordium-gantt-vue3.css'
-
-// 定义类型接口
-interface TaskListColumnConfig {
-  key: string;
-  label: string;
-  visible: boolean;
-  width?: number;
-}
-
-interface ToolbarConfig {
-  showAddTask?: boolean;
-  showAddMilestone?: boolean;
-  showTodayLocate?: boolean;
-  showExportCsv?: boolean;
-  showExportPdf?: boolean;
-  showLanguage?: boolean;
-  showTheme?: boolean;
-  showFullscreen?: boolean;
-  showTimeScale?: boolean;
-  timeScaleDimensions?: string[];
-  defaultTimeScale?: string;
-  showExpandCollapse?: boolean;
-}
-
-const tasks = ref([
-  {
-    id: 1,
-    name: '项目启动',
-    startDate: '2025-10-30',
-    endDate: '2025-11-5',
-    progress: 100,
-    department: '管理部',
-    departmentCode: 'D001',
-    type: 'task',
-  },
-])
-
-const milestones = ref([
-  {
-    id: 101,
-    name: '项目立项',
-    startDate: '2025-10-29',
-    type: 'milestone',
-    icon: 'diamond',
-  },
-])
-
-const customMessages = {
-  'zh-CN': {
-    department: '部门',
-    departmentCode: '部门编号',
-  },
-  'en-US': {
-    department: 'Department',
-    departmentCode: 'Department Code',
-  },
-}
-// const tasks = ref([])
-
-// const milestones = ref([])
-const showAddTaskDrawer = ref(false)
-const showAddMilestoneDialog = ref(false)
-
-// 定义可动态配置的列
-const availableColumns = ref<TaskListColumnConfig[]>([
-  { key: 'startDate', label: '开始日期', visible: true },
-  { key: 'endDate', label: '结束日期', visible: true },
-  { key: 'progress', label: '进度', visible: true },
-  { key: 'department', label: '部门', visible: true, width: 120 },
-  { key: 'departmentCode', label: '部门编号', visible: true },
-])
-
-// TaskList宽度配置示例
-const taskListConfig = {
-  defaultWidth: '50%',  // 默认展开宽度50%
-  minWidth: '300px',      // 最小宽度300px（默认280px）
-  maxWidth: '1200px',      // 最大宽度1200px（默认1160px）
-  columns: availableColumns.value,
-}
-
-// toolbar配置示例
-const toolbarConfig: ToolbarConfig = {
-  showAddTask: true,               // 显示添加任务按钮
-  showAddMilestone: true,          // 显示添加里程碑按钮
-  showTodayLocate: true,           // 显示定位到今天按钮
-  showExportCsv: true,             // 显示导出CSV按钮
-  showExportPdf: true,             // 显示导出PDF按钮
-  showLanguage: true,              // 显示语言切换按钮
-  showTheme: true,                 // 显示主题切换按钮
-  showFullscreen: true,            // 显示全屏按钮
-  showTimeScale: true,             // 显示时间刻度按钮组
-  timeScaleDimensions: [           // 显示所有时间刻度维度
-    'hour', 'day', 'week', 'month', 'quarter', 'year',
-  ],
-  defaultTimeScale: 'week',        // 默认选中周视图
-  showExpandCollapse: false,         // 显示展开/折叠按钮
-}
-
-const newTask = ref({
-  name: '',
-  startDate: '',
-  endDate: '',
-})
-
-const addTask = () => {
-  tasks.value.push({
-    id: tasks.value.length + 1,
-    name: newTask.value.name,
-    startDate: newTask.value.startDate,
-    endDate: newTask.value.endDate,
-    progress: 0,
-    department: '未分配',
-    departmentCode: 'D000',
-    type: 'task',
-  })
-  newTask.value = { name: '', startDate: '', endDate: '' }
-  showAddTaskDrawer.value = false
-}
-
-const addMilestone = () => {
-  milestones.value.push({
-    id: milestones.value.length + 101,
-    name: newTask.value.name,
-    startDate: newTask.value.startDate,
-    type: 'milestone',
-    icon: 'diamond',
-  })
-  console.log('milestones: ', milestones.value)
-  newTask.value = { name: '', startDate: '', endDate: '' }
-  showAddMilestoneDialog.value = false
-}
-
-const onTaskDblclick = (task: any) => {
-  alert(`双击任务: ${task.name}`)
-}
-const onTaskClick = (task: any) => {
-  alert(`单击任务: ${task.name}`)
-}
-const onMilestoneDblclick = (milestone: any) => {
-  alert(`双击里程碑: ${milestone.name}`)
-}
-</script>
-
 <template>
   <div>
     <div style="height: 600px;">
@@ -157,11 +10,15 @@ const onMilestoneDblclick = (milestone: any) => {
         :use-default-milestone-dialog="false"
         :locale-messages="customMessages"
         :allow-drag-and-resize="true"
+        :enable-task-row-move="true"
+        :assignee-options="assigneeOptions"
+        @task-row-moved="handleTaskRowMoved"
         @add-task="showAddTaskDrawer = true"
         @add-milestone="showAddMilestoneDialog = true"
         @task-double-click="onTaskDblclick"
         @task-click="onTaskClick"
         @milestone-double-click="onMilestoneDblclick"
+        @task-added="onTaskAdded"
       >
     </GanttChart>
     </div>
@@ -205,8 +62,8 @@ const onMilestoneDblclick = (milestone: any) => {
 
     <!-- 自定义Dialog组件基于element plus -->
     <el-dialog
-      v-model="showAddMilestoneDialog"
       title="自定义添加里程碑组件 - Element Plus"
+      v-model="showAddMilestoneDialog"
       width="400px"
       @close="newTask = { name: '', startDate: '', endDate: '' }"
     >
@@ -230,6 +87,212 @@ const onMilestoneDblclick = (milestone: any) => {
   </div>
 </template>
 
+<script setup lang="ts">
+import { ref } from 'vue';
+import { GanttChart, Task } from 'jordium-gantt-vue3'
+import 'jordium-gantt-vue3/dist/assets/jordium-gantt-vue3.css'
+
+// 定义类型接口
+interface TaskListColumnConfig {
+  key: string;
+  label: string;
+  visible: boolean;
+  width?: number;
+}
+
+interface ToolbarConfig {
+  showAddTask?: boolean;
+  showAddMilestone?: boolean;
+  showTodayLocate?: boolean;
+  showExportCsv?: boolean;
+  showExportPdf?: boolean;
+  showLanguage?: boolean;
+  showTheme?: boolean;
+  showFullscreen?: boolean;
+  showTimeScale?: boolean;
+  timeScaleDimensions?: string[];
+  defaultTimeScale?: string;
+  showExpandCollapse?: boolean;
+}
+
+const tasks = ref([
+  {
+    id: 1,
+    name: '项目启动',
+    startDate: '2025-10-30',
+    endDate: '2025-11-5',
+    progress: 100,
+    department: '管理部',
+    departmentCode: 'D001',
+    type: 'task',
+    assignee: '',
+    assigneeName: ''
+  }
+])
+
+const milestones = ref([
+  {
+    id: 101,
+    name: '项目立项',
+    startDate: '2025-10-29',
+    type: 'milestone',
+    icon: 'diamond'
+  }
+])
+
+const customMessages = {
+  'zh-CN': {
+    department: '部门',
+    departmentCode: '部门编号',
+  },
+  'en-US': {
+    department: 'Department',
+    departmentCode: 'Department Code',
+  }
+}
+// const tasks = ref([])
+
+// const milestones = ref([])
+const showAddTaskDrawer = ref(false);
+const showAddMilestoneDialog = ref(false);
+
+// 定义可动态配置的列
+const availableColumns = ref<TaskListColumnConfig[]>([
+  { key: 'startDate', label: '开始日期', visible: true },
+  { key: 'endDate', label: '结束日期', visible: true },
+  { key: 'progress', label: '进度', visible: true },
+  { key: 'department', label: '部门', visible: true, width: 120 },
+  { key: 'departmentCode', label: '部门编号', visible: true },
+  { key: 'assigneeName', label: '负责人', visible: true },
+])
+
+// 自定义负责人列表
+const assigneeOptions = ref([
+  { value: 'zhangsan', label: '张三' },
+  { value: 'lisi', label: '李四' },
+  { value: 'wangwu', label: '王五' },
+])
+
+// TaskList宽度配置示例
+const taskListConfig = {
+  defaultWidth: '50%',  // 默认展开宽度50%
+  minWidth: '300px',      // 最小宽度300px（默认280px）
+  maxWidth: '1200px',      // 最大宽度1200px（默认1160px）
+  columns: availableColumns.value
+}
+
+// toolbar配置示例
+const toolbarConfig: ToolbarConfig = {
+  showAddTask: true,               // 显示添加任务按钮
+  showAddMilestone: true,          // 显示添加里程碑按钮
+  showTodayLocate: true,           // 显示定位到今天按钮
+  showExportCsv: true,             // 显示导出CSV按钮
+  showExportPdf: true,             // 显示导出PDF按钮
+  showLanguage: true,              // 显示语言切换按钮
+  showTheme: true,                 // 显示主题切换按钮
+  showFullscreen: true,            // 显示全屏按钮
+  showTimeScale: true,             // 显示时间刻度按钮组
+  timeScaleDimensions: [           // 显示所有时间刻度维度
+    'hour', 'day', 'week', 'month', 'quarter', 'year'
+  ],
+  defaultTimeScale: 'week',        // 默认选中周视图
+  showExpandCollapse: false         // 显示展开/折叠按钮
+}
+
+
+const newTask = ref({
+  name: '',
+  startDate: '',
+  endDate: ''
+});
+
+const addTask = () => {
+  tasks.value.push({
+    id: tasks.value.length + 1,
+    name: newTask.value.name,
+    startDate: newTask.value.startDate,
+    endDate: newTask.value.endDate,
+    progress: 0,
+    department: '未分配',
+    departmentCode: 'D000',
+    assignee: '',
+    assigneeName: '',
+    type: 'task',
+  });
+  newTask.value = { name: '', startDate: '', endDate: '' };
+  showAddTaskDrawer.value = false;
+};
+
+const addMilestone = () => {
+  milestones.value.push({
+    id: milestones.value.length + 101,
+    name: newTask.value.name,
+    startDate: newTask.value.startDate,
+    type: 'milestone',
+    icon: 'diamond'
+  });
+  console.log('milestones: ', milestones.value)
+  newTask.value = { name: '', startDate: '', endDate: '' };
+  showAddMilestoneDialog.value = false;
+}
+
+const onTaskDblclick = (task: any) => {
+  alert(`双击任务: ${task.name}`)
+}
+const onTaskClick = (task: any) => {
+  alert(`单击任务: ${task.name}`)
+}
+const onMilestoneDblclick = (milestone: any) => {
+  alert(`双击里程碑: ${milestone.name}`)
+}
+
+// 任务行拖拽完成事件
+const handleTaskRowMoved = (payload: {
+  draggedTask: Task
+  targetTask: Task
+  position: 'after' | 'child'
+}) => {
+  const { draggedTask, targetTask, position } = payload
+
+  alert(`任务 [${draggedTask.name}] 被拖拽到任务 [${targetTask.name}] ${position === 'after' ? '之后' : '下方作为子任务'}`)
+
+  // 组件已自动更新任务的层级关系和位置
+  // position === 'after': 任务被放置在目标任务之后（同级）
+  // position === 'child': 任务被放置为目标任务的子任务（第一个子任务位置）
+
+  // 这里可以：
+  // 1. 显示确认对话框，让用户确认是否移动
+  // 2. 调用后端 API 保存新的任务层级关系
+  // 3. 更新相关的依赖关系
+
+  // 示例：调用后端 API
+  // await api.updateTaskHierarchy({
+  //   taskId: draggedTask.id,
+  //   targetTaskId: targetTask.id,
+  //   position: position
+  // })
+}
+
+// 任务添加后回调
+const onTaskAdded = (res) => {
+  const addedTask = tasks.value.find(t => t.id === res.task.id);
+  if (addedTask) {
+    // 使用addedTask.assignee去查找assigneeOptions的label进行赋值
+    const assigneeOption = assigneeOptions.value.find(option => option.value === addedTask.assignee);
+    if (assigneeOption) {
+      addedTask.assigneeName = assigneeOption.label;
+    }
+  } else {
+    // 使用addedTask.assignee去查找assigneeOptions的label进行赋值
+    const assigneeOption = assigneeOptions.value.find(option => option.value === res.task.assignee);
+    if (assigneeOption) {
+      res.task.assigneeName = assigneeOption.label;
+    }
+    tasks.value.push(res.task);
+  }
+};
+</script>
+
 <style scoped>
 /* 抽屉遮罩层 */
 .drawer-overlay {
diff --git a/package.json b/package.json
index d0d689f..fe1654d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "jordium-gantt-vue3",
-  "version": "1.4.5",
+  "version": "1.4.6",
   "type": "module",
   "main": "dist/jordium-gantt-vue3.cjs.js",
   "module": "dist/jordium-gantt-vue3.es.js",
diff --git a/src/components/GanttChart.vue b/src/components/GanttChart.vue
index 9b0c2d8..e922c75 100644
--- a/src/components/GanttChart.vue
+++ b/src/components/GanttChart.vue
@@ -48,6 +48,7 @@ const props = withDefaults(defineProps<Props>(), {
   autoSortByStartDate: false,
   allowDragAndResize: true,
   enableTaskRowMove: false,
+  assigneeOptions: () => [],
 })
 
 const emit = defineEmits([
@@ -128,6 +129,10 @@ interface Props {
   allowDragAndResize?: boolean
   // 是否启用TaskRow拖拽移动功能（默认为 false）
   enableTaskRowMove?: boolean
+  // 指派人员选项列表（用于TaskDrawer中的assignee下拉菜单）
+  // 格式：{ key?: string | number, value: string | number, label: string }
+  // key 为可选项，若不存在则使用 value 作为选项的唯一标识
+  assigneeOptions?: Array<{ key?: string | number; value: string | number; label: string }>
 }
 
 // TaskList的固定总长度（所有列的最小宽度之和 + 边框等额外空间）
@@ -2328,6 +2333,7 @@ function handleMilestoneDialogDelete(milestoneId: number) {
       v-model:visible="taskDrawerVisible"
       :task="taskDrawerTask"
       :is-edit="taskDrawerEditMode"
+      :assignee-options="props.assigneeOptions"
       @submit="handleTaskDrawerSubmit"
       @close="taskDrawerVisible = false"
       @start-timer="handleStartTimer"
diff --git a/src/components/TaskBar.vue b/src/components/TaskBar.vue
index 6a97827..8fc82d8 100644
--- a/src/components/TaskBar.vue
+++ b/src/components/TaskBar.vue
@@ -243,7 +243,26 @@ const taskBarStyle = computed(() => {
   const startDate = createLocalDate(currentStartDate)
   const endDate = createLocalDate(currentEndDate)
   const baseStart = parsedBaseStartDate.value
-  if (!startDate || !endDate || !baseStart) {
+
+  // 如果startDate和endDate都不存在，返回0宽度（实际不会渲染，由shouldRenderTaskBar控制）
+  if (!startDate && !endDate) {
+    return {
+      left: '0px',
+      width: '0px',
+      height: `${props.rowHeight - 10}px`,
+      top: '4px',
+    }
+  }
+
+  // 渲染时使用有效日期：如果只有startDate或endDate，用它来计算开始和结束位置
+  // 注意：不修改原始的startDate/endDate变量，只用于渲染计算
+  const renderStartDate = startDate || endDate
+  const renderEndDate = endDate || startDate
+  const renderBaseStart = baseStart
+
+  // 安全检查：renderStartDate和renderEndDate必定存在（因为上面已经检查过）
+  // 但baseStart可能不存在，如果不存在则无法计算位置
+  if (!renderStartDate || !renderEndDate || !renderBaseStart) {
     return {
       left: '0px',
       width: '0px',
@@ -258,12 +277,12 @@ const taskBarStyle = computed(() => {
   // 小时视图：按分钟精确计算位置（需要考虑时间部分）
   if (props.currentTimeScale === TimelineScale.HOUR) {
     // 确保 baseStart 是当天的 00:00:00
-    const baseStartOfDay = new Date(baseStart)
+    const baseStartOfDay = new Date(renderBaseStart)
     baseStartOfDay.setHours(0, 0, 0, 0)
 
     // 处理没有时间部分的日期字符串
-    let adjustedStartDate = startDate
-    let adjustedEndDate = endDate
+    let adjustedStartDate = renderStartDate
+    let adjustedEndDate = renderEndDate
 
     // 检查原始日期字符串是否包含时间部分
     const originalStartStr = currentStartDate || props.task.startDate
@@ -274,13 +293,13 @@ const taskBarStyle = computed(() => {
       typeof originalStartStr === 'string' &&
       /^\d{4}-\d{2}-\d{2}$/.test(originalStartStr.trim())
     ) {
-      adjustedStartDate = new Date(startDate)
+      adjustedStartDate = new Date(renderStartDate)
       adjustedStartDate.setHours(0, 0, 0, 0)
     }
 
     // 如果endDate没有时间部分（格式为YYYY-MM-DD），设置为次日00:00
     if (typeof originalEndStr === 'string' && /^\d{4}-\d{2}-\d{2}$/.test(originalEndStr.trim())) {
-      adjustedEndDate = new Date(endDate)
+      adjustedEndDate = new Date(renderEndDate)
       adjustedEndDate.setDate(adjustedEndDate.getDate() + 1)
       adjustedEndDate.setHours(0, 0, 0, 0)
     }
@@ -299,15 +318,19 @@ const taskBarStyle = computed(() => {
 
     // 将日期标准化为当天的00:00:00，忽略时间部分
     const startDateOnly = new Date(
-      startDate.getFullYear(),
-      startDate.getMonth(),
-      startDate.getDate(),
+      renderStartDate.getFullYear(),
+      renderStartDate.getMonth(),
+      renderStartDate.getDate(),
+    )
+    const endDateOnly = new Date(
+      renderEndDate.getFullYear(),
+      renderEndDate.getMonth(),
+      renderEndDate.getDate(),
     )
-    const endDateOnly = new Date(endDate.getFullYear(), endDate.getMonth(), endDate.getDate())
     const baseStartOnly = new Date(
-      baseStart.getFullYear(),
-      baseStart.getMonth(),
-      baseStart.getDate(),
+      renderBaseStart.getFullYear(),
+      renderBaseStart.getMonth(),
+      renderBaseStart.getDate(),
     )
 
     if (
@@ -429,6 +452,15 @@ const parsedEndDate = computed(() => createLocalDate(props.task.endDate || ''))
 // 缓存解析后的基准开始日期
 const parsedBaseStartDate = computed(() => createLocalDate(props.startDate))
 
+// 判断是否应该渲染TaskBar：只考虑startDate和endDate，都不存在时不渲染
+const shouldRenderTaskBar = computed(() => {
+  const currentStartDate = tempTaskData.value?.startDate || props.task.startDate
+  const currentEndDate = tempTaskData.value?.endDate || props.task.endDate
+
+  // 只要startDate或endDate有一个存在就渲染
+  return !!(currentStartDate || currentEndDate)
+})
+
 // 计算任务状态和颜色
 const taskStatus = computed(() => {
   // 父级任务(Story类型)使用与新建按钮一致的配色
@@ -2240,6 +2272,7 @@ onUnmounted(() => {
 
 <template>
   <div
+    v-if="shouldRenderTaskBar"
     ref="barRef"
     class="task-bar"
     :style="{
@@ -2336,8 +2369,8 @@ onUnmounted(() => {
         <!-- 图片头像 -->
         <img v-if="task.avatar" :src="task.avatar" :alt="task.assignee || 'avatar'" />
         <!-- 文字头像（负责人首字母） -->
-        <span v-else-if="task.assignee" class="avatar-text">
-          {{ task.assignee.charAt(0).toUpperCase() }}
+        <span v-else-if="task.assigneeName" class="avatar-text">
+          {{ task.assigneeName.charAt(0).toUpperCase() }}
         </span>
         <!-- 默认灰色用户图标 -->
         <svg v-else class="avatar-icon" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
diff --git a/src/components/TaskDrawer.vue b/src/components/TaskDrawer.vue
index c03a52c..27b9a49 100644
--- a/src/components/TaskDrawer.vue
+++ b/src/components/TaskDrawer.vue
@@ -9,11 +9,18 @@ import ConfirmTimerDialog from './ConfirmTimerDialog.vue'
 import type { Task } from '../models/classes/Task'
 import '../styles/app.css'
 
+interface AssigneeOption {
+  key?: string | number
+  value: string | number
+  label: string
+}
+
 interface Props {
   visible: boolean
   task?: Task | null
   isEdit?: boolean
   onDelete?: (task: Task) => void
+  assigneeOptions?: AssigneeOption[]
 }
 
 const props = withDefaults(defineProps<Props>(), {
@@ -21,6 +28,13 @@ const props = withDefaults(defineProps<Props>(), {
   task: null,
   isEdit: false,
   onDelete: undefined,
+  assigneeOptions: () => [
+    { value: 'zhangsan', label: '张三' },
+    { value: 'lisi', label: '李四' },
+    { value: 'wangwu', label: '王五' },
+    { value: 'zhaoliu', label: '赵六' },
+    { value: 'qianqi', label: '钱七' },
+  ],
 })
 
 const emit = defineEmits<{
@@ -628,6 +642,17 @@ function confirmTimer(desc: string) {
   // desc 可用于后续业务
   handleStartTimer(desc)
 }
+
+// 处理负责人变更
+const handleAssigneeChanged = (value: string) => {
+  // 通过value过滤props.assigneeOptions获取对应的label
+  const selected = props.assigneeOptions?.find(option => option.value === value)
+  if (selected) {
+    // 这里可以根据需要处理选中的负责人信息
+    // 例如，可以将负责人名称存储在formData中
+    formData.assigneeName = selected.label
+  }
+}
 </script>
 
 <template>
@@ -788,13 +813,15 @@ function confirmTimer(desc: string) {
 
           <div class="form-group">
             <label class="form-label" for="task-assignee">{{ t.assignee }}</label>
-            <select id="task-assignee" v-model="formData.assignee" class="form-select">
+            <select id="task-assignee" v-model="formData.assignee" class="form-select" @change="handleAssigneeChanged">
               <option value="">{{ t.selectAssignee }}</option>
-              <option value="张三">张三</option>
-              <option value="李四">李四</option>
-              <option value="王五">王五</option>
-              <option value="赵六">赵六</option>
-              <option value="钱七">钱七</option>
+              <option
+                v-for="assignee in props.assigneeOptions"
+                :key="assignee.key ?? assignee.value"
+                :value="assignee.value"
+              >
+                {{ assignee.label }}
+              </option>
             </select>
           </div>
 
diff --git a/src/models/classes/Task.ts b/src/models/classes/Task.ts
index 5000ec6..4e4f8a2 100644
--- a/src/models/classes/Task.ts
+++ b/src/models/classes/Task.ts
@@ -3,7 +3,8 @@ export interface Task {
   id: number
   name: string
   predecessor?: number[] // 前置任务ID数组
-  assignee?: string
+  assignee?: string // 记录唯一键值，如用户ID或用户名
+  assigneeName?: string // 任务负责人名称
   avatar?: string // 任务负责人头像URL
   startDate?: string
   endDate?: string