diff --git a/packages/vant/src/back-top/BackTop.tsx b/packages/vant/src/back-top/BackTop.tsx
index 89468fe05..a3e2c0b7a 100644
--- a/packages/vant/src/back-top/BackTop.tsx
+++ b/packages/vant/src/back-top/BackTop.tsx
@@ -33,7 +33,7 @@ export const backTopProps = {
   right: makeNumericProp(30),
   bottom: makeNumericProp(40),
   target: [String, Object] as PropType<TeleportProps['to']>,
-  visibilityHeight: makeNumericProp(200),
+  offset: makeNumericProp(200),
   teleport: {
     type: [String, Object] as PropType<TeleportProps['to']>,
     default: 'body',
@@ -72,7 +72,7 @@ export default defineComponent({
     };
 
     const scroll = () => {
-      show.value = getScrollTop(target) >= props.visibilityHeight;
+      show.value = getScrollTop(target) >= props.offset;
     };
 
     const getTarget = () => {
@@ -95,7 +95,7 @@ export default defineComponent({
       );
     };
 
-    useEventListener('scroll', throttle(scroll, 300), { target: scrollParent });
+    useEventListener('scroll', throttle(scroll, 100), { target: scrollParent });
 
     onMounted(() => {
       nextTick(() => {
diff --git a/packages/vant/src/back-top/README.md b/packages/vant/src/back-top/README.md
index b9ab37057..c07da982e 100644
--- a/packages/vant/src/back-top/README.md
+++ b/packages/vant/src/back-top/README.md
@@ -113,7 +113,7 @@ export default {
 | target | Can be a `selector` or `HTMLElement` | _string \| HTMLElement_ | - |
 | right | Right distance of the page, the default unit is px | _number \| string_ | `30` |
 | bottom | Bottom distance of the page, the default unit is px | _number \| string_ | `40` |
-| visibility-height | The button will not show until the scroll height reaches this value | _number_ | `200` |
+| offset | The button will not show until the scroll height reaches this value | _number_ | `200` |
 | teleport | Specifies a target element where BackTop will be mounted | _string \| Element_ | `body` |
 
 ### Slots
diff --git a/packages/vant/src/back-top/README.zh-CN.md b/packages/vant/src/back-top/README.zh-CN.md
index d130dbc08..9b3d3aad2 100644
--- a/packages/vant/src/back-top/README.zh-CN.md
+++ b/packages/vant/src/back-top/README.zh-CN.md
@@ -115,7 +115,7 @@ export default {
 | target | 触发滚动的目标对象，支持传入选择器或 `HTMLElement` | _string \| HTMLElement_ | - |
 | right | 距离页面右侧的距离，默认单位为 `px` | _number \| string_ | `30` |
 | bottom | 距离页面底部的距离，默认单位为 `px` | _number \| string_ | `40` |
-| visibility-height | 滚动高度达到此参数值才显示 | _number_ | `200` |
+| offset | 滚动高度达到此参数值才显示 | _number_ | `200` |
 | teleport | 指定挂载的节点，等同于 Teleport 组件的 [to 属性](https://v3.cn.vuejs.org/api/built-in-components.html#teleport) | _string \| Element_ | `body` |
 
 ### Slots