diff --git a/packages/vant/src/floating-bubble/FloatingBubble.tsx b/packages/vant/src/floating-bubble/FloatingBubble.tsx
index d2441f38e..cf5c23ff4 100644
--- a/packages/vant/src/floating-bubble/FloatingBubble.tsx
+++ b/packages/vant/src/floating-bubble/FloatingBubble.tsx
@@ -44,16 +44,13 @@ import {
 
 export const floatingBubbleProps = {
   gap: {
-    type: [Number, Object] as unknown as PropType<FloatingBubbleGap>,
+    type: [Number, Object] as PropType<FloatingBubbleGap>,
     default: 24,
   },
   icon: String,
   axis: makeStringProp<FloatingBubbleAxis>('y'),
   magnetic: String as PropType<FloatingBubbleMagnetic>,
-  offset: {
-    type: Object as unknown as PropType<FloatingBubbleOffset>,
-    default: () => ({ x: -1, y: -1 }),
-  },
+  offset: Object as PropType<FloatingBubbleOffset>,
   teleport: {
     type: [String, Object] as PropType<TeleportProps['to']>,
     default: 'body',
@@ -120,8 +117,8 @@ export default defineComponent({
       const { width, height } = useRect(rootRef.value!);
       const { offset } = props;
       state.value = {
-        x: offset.x > -1 ? offset.x : windowWidth.value - width - gapX.value,
-        y: offset.y > -1 ? offset.y : windowHeight.value - height - gapY.value,
+        x: offset ? offset.x : windowWidth.value - width - gapX.value,
+        y: offset ? offset.y : windowHeight.value - height - gapY.value,
         width,
         height,
       };
diff --git a/packages/vant/src/floating-bubble/test/index.spec.ts b/packages/vant/src/floating-bubble/test/index.spec.ts
index c51c105d2..9d4f9389d 100644
--- a/packages/vant/src/floating-bubble/test/index.spec.ts
+++ b/packages/vant/src/floating-bubble/test/index.spec.ts
@@ -9,9 +9,16 @@ import {
   triggerDrag,
 } from '../../../test';
 
+const bubbleWidth = 48;
+const bubbleHeight = 48;
+const defaultGap = 24;
+
 test('should render correctly when all props set', async () => {
   useWindowSize();
-  const restore = mockGetBoundingClientRect({ width: 48, height: 48 });
+  const restore = mockGetBoundingClientRect({
+    width: bubbleWidth,
+    height: bubbleHeight,
+  });
 
   const root = document.createElement('div');
   const wrapper = mount(FloatingBubble, {
@@ -27,8 +34,8 @@ test('should render correctly when all props set', async () => {
   await later();
 
   expect(floatingBubbleEl.style.transform).toEqual(
-    `translate3d(${window.innerWidth - 48 - 24}px, ${
-      window.innerHeight - 48 - 24
+    `translate3d(${window.innerWidth - bubbleWidth - defaultGap}px, ${
+      window.innerHeight - bubbleHeight - defaultGap
     }px, 0)`,
   );
 
@@ -37,8 +44,8 @@ test('should render correctly when all props set', async () => {
   });
 
   expect(floatingBubbleEl.style.transform).toEqual(
-    `translate3d(${window.innerWidth - 48 - 50}px, ${
-      window.innerHeight - 48 - 50
+    `translate3d(${window.innerWidth - bubbleWidth - 50}px, ${
+      window.innerHeight - bubbleHeight - 50
     }px, 0)`,
   );
 
@@ -64,7 +71,10 @@ test('should render correctly when all props set', async () => {
 
 test('should render with xy gaps', async () => {
   useWindowSize();
-  const restore = mockGetBoundingClientRect({ width: 48, height: 48 });
+  const restore = mockGetBoundingClientRect({
+    width: bubbleWidth,
+    height: bubbleHeight,
+  });
 
   const root = document.createElement('div');
   mount(FloatingBubble, {
@@ -81,8 +91,8 @@ test('should render with xy gaps', async () => {
   await later();
 
   expect(floatingBubbleEl.style.transform).toEqual(
-    `translate3d(${window.innerWidth - 48 - 50}px, ${
-      window.innerHeight - 48 - 27
+    `translate3d(${window.innerWidth - bubbleWidth - 50}px, ${
+      window.innerHeight - bubbleHeight - 27
     }px, 0)`,
   );
 
@@ -90,7 +100,10 @@ test('should render with xy gaps', async () => {
 });
 
 test('should only y axis direction move when axis is default', async () => {
-  const restore = mockGetBoundingClientRect({ width: 48, height: 48 });
+  const restore = mockGetBoundingClientRect({
+    width: bubbleWidth,
+    height: bubbleHeight,
+  });
 
   const root = document.createElement('div');
   mount(FloatingBubble, {
@@ -106,16 +119,19 @@ test('should only y axis direction move when axis is default', async () => {
   await triggerDrag(floatingBubbleEl, -100, -100);
 
   expect(floatingBubbleEl.style.transform).toEqual(
-    `translate3d(${window.innerWidth - 48 - 24}px, ${
-      window.innerHeight - 48 - 24 - 100
+    `translate3d(${window.innerWidth - bubbleWidth - defaultGap}px, ${
+      window.innerHeight - bubbleHeight - defaultGap - 100
     }px, 0)`,
   );
 
   restore();
 });
 
-test('should only x axis direction adn emit offsetChange move when axis is "x" ', async () => {
-  const restore = mockGetBoundingClientRect({ width: 48, height: 48 });
+test('should only x axis direction and emit offsetChange move when axis is "x"', async () => {
+  const restore = mockGetBoundingClientRect({
+    width: bubbleWidth,
+    height: bubbleHeight,
+  });
 
   const root = document.createElement('div');
   const wrapper = mount(FloatingBubble, {
@@ -132,8 +148,8 @@ test('should only x axis direction adn emit offsetChange move when axis is "x" '
   await triggerDrag(floatingBubbleEl, -100, -100);
 
   expect(floatingBubbleEl.style.transform).toEqual(
-    `translate3d(${window.innerWidth - 48 - 24 - 100}px, ${
-      window.innerHeight - 48 - 24
+    `translate3d(${window.innerWidth - bubbleWidth - defaultGap - 100}px, ${
+      window.innerHeight - bubbleHeight - defaultGap
     }px, 0)`,
   );
 
@@ -145,8 +161,11 @@ test('should only x axis direction adn emit offsetChange move when axis is "x" '
   restore();
 });
 
-test('should free direction move when axis is "xy" ', async () => {
-  const restore = mockGetBoundingClientRect({ width: 48, height: 48 });
+test('should free direction move when axis is "xy"', async () => {
+  const restore = mockGetBoundingClientRect({
+    width: bubbleWidth,
+    height: bubbleHeight,
+  });
 
   const root = document.createElement('div');
   mount(FloatingBubble, {
@@ -163,44 +182,21 @@ test('should free direction move when axis is "xy" ', async () => {
   await triggerDrag(floatingBubbleEl, -100, -100);
 
   expect(floatingBubbleEl.style.transform).toEqual(
-    `translate3d(${window.innerWidth - 48 - 24 - 100}px, ${
-      window.innerHeight - 48 - 24 - 100
+    `translate3d(${window.innerWidth - bubbleWidth - defaultGap - 100}px, ${
+      window.innerHeight - bubbleHeight - defaultGap - 100
     }px, 0)`,
   );
 
   restore();
 });
 
-test('should free direction move when axis is "xy" ', async () => {
-  const restore = mockGetBoundingClientRect({ width: 48, height: 48 });
-
-  const root = document.createElement('div');
-  mount(FloatingBubble, {
-    props: {
-      teleport: root,
-      axis: 'xy',
-    },
-  });
-
-  const floatingBubbleEl = root.querySelector<HTMLDivElement>(
-    '.van-floating-bubble',
-  )!;
-
-  await triggerDrag(floatingBubbleEl, -100, -100);
-
-  expect(floatingBubbleEl.style.transform).toEqual(
-    `translate3d(${window.innerWidth - 48 - 24 - 100}px, ${
-      window.innerHeight - 48 - 24 - 100
-    }px, 0)`,
-  );
-
-  restore();
-});
-
-test('should free direction move and  magnetic to x axios when magnetic is "x" ', async () => {
+test('should free direction move and magnetic to x axis when magnetic is "x" ', async () => {
   vi.useFakeTimers();
 
-  const restore = mockGetBoundingClientRect({ width: 48, height: 48 });
+  const restore = mockGetBoundingClientRect({
+    width: bubbleWidth,
+    height: bubbleHeight,
+  });
   const root = document.createElement('div');
   mount(FloatingBubble, {
     props: {
@@ -218,8 +214,8 @@ test('should free direction move and  magnetic to x axios when magnetic is "x" '
   await vi.advanceTimersByTimeAsync(400);
 
   expect(floatingBubbleEl.style.transform).toEqual(
-    `translate3d(${window.innerWidth - 48 - 24}px, ${
-      window.innerHeight - 48 - 24 - 100
+    `translate3d(${window.innerWidth - bubbleWidth - defaultGap}px, ${
+      window.innerHeight - bubbleHeight - defaultGap - 100
     }px, 0)`,
   );
 
@@ -227,17 +223,20 @@ test('should free direction move and  magnetic to x axios when magnetic is "x" '
   await vi.advanceTimersByTimeAsync(400);
 
   expect(floatingBubbleEl.style.transform).toEqual(
-    `translate3d(${24}px, ${window.innerHeight - 48 - 24 - 200}px, 0)`,
+    `translate3d(${defaultGap}px, ${window.innerHeight - bubbleHeight - defaultGap - 200}px, 0)`,
   );
 
   restore();
   vi.useRealTimers();
 });
 
-test('should offset control positioning when use v-model:offset ', async () => {
+test('should offset control positioning when use v-model:offset', async () => {
   vi.useFakeTimers();
 
-  const restore = mockGetBoundingClientRect({ width: 48, height: 48 });
+  const restore = mockGetBoundingClientRect({
+    width: bubbleWidth,
+    height: bubbleHeight,
+  });
   const root = document.createElement('div');
   const wrapper = mount(FloatingBubble, {
     props: {
@@ -290,3 +289,37 @@ test('should emit click when click wrapper', async () => {
 
   expect(wrapper.emitted('click')).toBeFalsy();
 });
+
+test('should handle negative gap values', async () => {
+  const restore = mockGetBoundingClientRect({
+    width: bubbleWidth,
+    height: bubbleHeight,
+  });
+
+  const root = document.createElement('div');
+  mount(FloatingBubble, {
+    props: {
+      teleport: root,
+      axis: 'xy',
+      gap: -10,
+    },
+  });
+
+  const floatingBubbleEl = root.querySelector<HTMLDivElement>(
+    '.van-floating-bubble',
+  )!;
+
+  await triggerDrag(floatingBubbleEl, -1000, -1000);
+
+  expect(floatingBubbleEl.style.transform).toEqual(
+    `translate3d(-10px, -10px, 0)`,
+  );
+
+  await triggerDrag(floatingBubbleEl, 1000, 1000);
+
+  expect(floatingBubbleEl.style.transform).toEqual(
+    `translate3d(${window.innerWidth - bubbleWidth + 10}px, ${window.innerHeight - bubbleHeight + 10}px, 0)`,
+  );
+
+  restore();
+});