diff --git a/src/fab/README.en-US.md b/src/fab/README.en-US.md
index d85a62e69..8653c16ee 100644
--- a/src/fab/README.en-US.md
+++ b/src/fab/README.en-US.md
@@ -6,14 +6,14 @@
 
 name | type | default | description | required
 -- | -- | -- | -- | --
-style | String | right: 16px; bottom: 32px; | \- | N
+style | Object | - | CSS(Cascading Style Sheets) | N
 custom-style | Object | - | CSS(Cascading Style Sheets)，used to set style on virtual component | N
 button-props | Object | - | Typescript：`ButtonProps`，[Button API Documents](./button?tab=api)。[see more ts definition](https://github.com/Tencent/tdesign-miniprogram/tree/develop/src/fab/type.ts) | N
-draggable | String / Boolean | false | Typescript：`boolean \| DirectionEnum ` `type DirectionEnum = 'all' \| 'vertical' \| 'horizontal'`。[see more ts definition](https://github.com/Tencent/tdesign-miniprogram/tree/develop/src/fab/type.ts) | N
+draggable | String / Boolean | false | Typescript：`boolean \| FabDirectionEnum ` `type FabDirectionEnum = 'all' \| 'vertical' \| 'horizontal'`。[see more ts definition](https://github.com/Tencent/tdesign-miniprogram/tree/develop/src/fab/type.ts) | N
 icon | String | - | \- | N
 text | String | - | \- | N
 using-custom-navbar | Boolean | false | \- | N
-y-edge | Array | - | Typescript：`Array<string \| number>` | N
+y-bounds | Array | - | Typescript：`Array<string \| number>` | N
 
 ### Fab Events
 
diff --git a/src/fab/README.md b/src/fab/README.md
index aea3cf87c..e63c0c723 100644
--- a/src/fab/README.md
+++ b/src/fab/README.md
@@ -51,14 +51,14 @@ isComponent: true
 
 名称 | 类型 | 默认值 | 描述 | 必传
 -- | -- | -- | -- | --
-style | String | right: 16px; bottom: 32px; | 悬浮按钮的样式，常用于调整位置（即将废弃，建议使用 `style`） | N
+style | Object | - | 样式 | N
 custom-style | Object | - | 样式，一般用于开启虚拟化组件节点场景 | N
 button-props | Object | - | 透传至 Button 组件。TS 类型：`ButtonProps`，[Button API Documents](./button?tab=api)。[详细类型定义](https://github.com/Tencent/tdesign-miniprogram/tree/develop/src/fab/type.ts) | N
-draggable | String / Boolean | false | 是否可拖拽。`true` / `'all'`可拖动<br>`'vertical'`可垂直拖动<br>`'horizontal'`可水平拖动<br>`false`禁止拖动。TS 类型：`boolean \| DirectionEnum ` `type DirectionEnum = 'all' \| 'vertical' \| 'horizontal'`。[详细类型定义](https://github.com/Tencent/tdesign-miniprogram/tree/develop/src/fab/type.ts) | N
+draggable | String / Boolean | false | 是否可拖拽。`true` / `'all'`可拖动<br>`'vertical'`可垂直拖动<br>`'horizontal'`可水平拖动<br>`false`禁止拖动。TS 类型：`boolean \| FabDirectionEnum ` `type FabDirectionEnum = 'all' \| 'vertical' \| 'horizontal'`。[详细类型定义](https://github.com/Tencent/tdesign-miniprogram/tree/develop/src/fab/type.ts) | N
 icon | String | - | 图标 | N
 text | String | - | 文本内容 | N
 using-custom-navbar | Boolean | false | 是否使用了自定义导航栏 | N
-y-edge | Array | - | 设置垂直方向边界限制，示例：[48, 48] 或 ['96rpx', 80]。TS 类型：`Array<string \| number>` | N
+y-bounds | Array | - | 设置垂直方向边界限制，示例：[48, 48] 或 ['96rpx', 80]。TS 类型：`Array<string \| number>` | N
 
 ### Fab Events
 
diff --git a/src/fab/__test__/__snapshots__/demo.test.js.snap b/src/fab/__test__/__snapshots__/demo.test.js.snap
index 62d49619c..17b45e5ef 100644
--- a/src/fab/__test__/__snapshots__/demo.test.js.snap
+++ b/src/fab/__test__/__snapshots__/demo.test.js.snap
@@ -34,7 +34,7 @@ exports[`Fab Fab draggable demo works fine 1`] = `
     icon="gesture-press"
     text="拖我"
     usingCustomNavbar="{{true}}"
-    yEdge="{{
+    yBounds="{{
       Array [
         0,
         32,
diff --git a/src/fab/_example/draggable/index.wxml b/src/fab/_example/draggable/index.wxml
index 38c2b3afd..390a9842b 100644
--- a/src/fab/_example/draggable/index.wxml
+++ b/src/fab/_example/draggable/index.wxml
@@ -6,5 +6,5 @@
   aria-label="增加"
   usingCustomNavbar
   draggable
-  y-edge="{{[0, 32]}}"
+  y-bounds="{{[0, 32]}}"
 ></t-fab>
diff --git a/src/fab/fab.ts b/src/fab/fab.ts
index 5528db3d0..3f61d1853 100644
--- a/src/fab/fab.ts
+++ b/src/fab/fab.ts
@@ -52,15 +52,15 @@ export default class Fab extends SuperComponent {
       this.triggerEvent('click', e);
     },
     onMove(e) {
-      const { yEdge } = this.properties;
+      const { yBounds } = this.properties;
       const { distanceTop } = this.data;
 
       const { x, y, rect } = e.detail;
       const maxX = systemInfo.windowWidth - rect.width; // 父容器宽度 - 拖动元素宽度
-      const maxY = systemInfo.windowHeight - Math.max(distanceTop, unitConvert(yEdge[0])) - rect.height; // 父容器高度 - 拖动元素高度
+      const maxY = systemInfo.windowHeight - Math.max(distanceTop, unitConvert(yBounds[0])) - rect.height; // 父容器高度 - 拖动元素高度
 
       const right = Math.max(0, Math.min(x, maxX));
-      const bottom = Math.max(0, unitConvert(yEdge[1]), Math.min(y, maxY));
+      const bottom = Math.max(0, unitConvert(yBounds[1]), Math.min(y, maxY));
       this.setData({
         moveStyle: `right: ${right}px; bottom: ${bottom}px;`,
       });
diff --git a/src/fab/props.ts b/src/fab/props.ts
index 576891f2d..b206fc958 100644
--- a/src/fab/props.ts
+++ b/src/fab/props.ts
@@ -36,7 +36,7 @@ const props: TdFabProps = {
     value: false,
   },
   /** 设置垂直方向边界限制，示例：[48, 48] 或 ['96rpx', 80] */
-  yEdge: {
+  yBounds: {
     type: Array,
   },
 };
diff --git a/src/fab/type.ts b/src/fab/type.ts
index 6dcff50bb..a70a45de4 100644
--- a/src/fab/type.ts
+++ b/src/fab/type.ts
@@ -20,7 +20,7 @@ export interface TdFabProps {
    */
   draggable?: {
     type: null;
-    value?: boolean | DirectionEnum;
+    value?: boolean | FabDirectionEnum;
   };
   /**
    * 图标
@@ -57,10 +57,10 @@ export interface TdFabProps {
   /**
    * 设置垂直方向边界限制，示例：[48, 48] 或 ['96rpx', 80]
    */
-  yEdge?: {
+  yBounds?: {
     type: ArrayConstructor;
     value?: Array<string | number>;
   };
 }
 
-export type DirectionEnum = 'all' | 'vertical' | 'horizontal';
+export type FabDirectionEnum = 'all' | 'vertical' | 'horizontal';