diff --git a/src/components/TaskList.vue b/src/components/TaskList.vue
index d3ad37c..7a4b55b 100644
--- a/src/components/TaskList.vue
+++ b/src/components/TaskList.vue
@@ -313,14 +313,12 @@ const handleTaskListScroll = (event: Event) => {
       detail: { scrollTop },
     }),
   )
-}
-
-// 处理Timeline垂直滚动同步
+}// 处理Timeline垂直滚动同步
 const handleTimelineVerticalScroll = (event: CustomEvent) => {
   const { scrollTop } = event.detail
   const taskListBodyElement = document.querySelector('.task-list-body') as HTMLElement
-  if (taskListBodyElement && taskListBodyElement.scrollTop !== scrollTop) {
-    // 避免循环触发，只在scrollTop不同时才设置
+  if (taskListBodyElement && Math.abs(taskListBodyElement.scrollTop - scrollTop) > 1) {
+    // 使用更精确的比较，避免1px以内的细微差异导致的循环触发
     taskListBodyElement.scrollTop = scrollTop
   }
 }
diff --git a/src/components/TaskRow.vue b/src/components/TaskRow.vue
index 16b80e4..1525a34 100644
--- a/src/components/TaskRow.vue
+++ b/src/components/TaskRow.vue
@@ -518,7 +518,8 @@ onUnmounted(() => {
 .task-row {
   display: flex;
   border-bottom: 1px solid var(--gantt-border-light);
-  height: 50px;
+  height: 51px; /* 修改为51px，与Timeline中的task-row高度保持一致，包含border-bottom 1px */
+  box-sizing: border-box; /* 确保border包含在高度计算中 */
   background: var(--gantt-bg-primary);
   align-items: center;
   color: var(--gantt-text-secondary);
diff --git a/src/components/Timeline.vue b/src/components/Timeline.vue
index 7dee155..06d88d0 100644
--- a/src/components/Timeline.vue
+++ b/src/components/Timeline.vue
@@ -1543,8 +1543,8 @@ onMounted(() => {
 const handleTaskListVerticalScroll = (event: CustomEvent) => {
   const { scrollTop } = event.detail
   const timelineBody = document.querySelector('.timeline-body') as HTMLElement
-  if (timelineBody && timelineBody.scrollTop !== scrollTop) {
-    // 避免循环触发，只在scrollTop不同时才设置
+  if (timelineBody && Math.abs(timelineBody.scrollTop - scrollTop) > 1) {
+    // 使用更精确的比较，避免1px以内的细微差异导致的循环触发
     timelineBody.scrollTop = scrollTop
   }
 }