diff --git a/components/activity-indicator/demo/basic.md b/components/activity-indicator/demo/basic.md
index 9ed74ccfc4e..190654f36d1 100644
--- a/components/activity-indicator/demo/basic.md
+++ b/components/activity-indicator/demo/basic.md
@@ -5,7 +5,7 @@ title:
   en-US: Basic
 ---
 
-基本的活动指示器。
+Basic usage
 
 ````jsx
 import { ActivityIndicator, WingBlank, WhiteSpace, Button } from 'antd-mobile';
@@ -31,33 +31,33 @@ class App extends React.Component {
       <div>
         <WingBlank>
           <div className="loading-container">
-            <p className="sub-title">icon无文案</p>
+            <p className="sub-title">icon without text</p>
             <div className="loading-example">
               <ActivityIndicator animating />
             </div>
             <WhiteSpace size="xl" />
-            <p className="sub-title">icon带文案</p>
+            <p className="sub-title">icon with text</p>
             <div className="loading-example">
               <ActivityIndicator
-                text="加载中..."
+                text="Loading..."
               />
             </div>
             <WhiteSpace size="xl" />
-            <p className="sub-title">大号icon，自定义文案样式</p>
+            <p className="sub-title">icon with large size and customized text style</p>
             <div className="loading-example">
               <div className="align">
                 <ActivityIndicator size="large" />
-                <span style={{ marginTop: 8 }}>加载中...</span>
+                <span style={{ marginTop: 8 }}>Loading...</span>
               </div>
             </div>
           </div>
           <div className="toast-container">
             <WhiteSpace size="xl" />
-            <Button onClick={this.showToast}>点击显示 Toast</Button>
+            <Button onClick={this.showToast}>Click to show Toast</Button>
             <div className="toast-example">
               <ActivityIndicator
                 toast
-                text="正在加载"
+                text="Loading..."
                 animating={this.state.animating}
               />
             </div>
diff --git a/components/activity-indicator/index.en-US.md b/components/activity-indicator/index.en-US.md
index e89cf000357..855c50d3d2f 100644
--- a/components/activity-indicator/index.en-US.md
+++ b/components/activity-indicator/index.en-US.md
@@ -4,14 +4,12 @@ type: Feedback
 title: ActivityIndicator
 ---
 
-活动指示器。
-表明某个任务正在进行中。
+`ActivityIndicator` indicates that a task is currently in progress.
 
-### 规则
-- 不要让活动指示器静止，用户会以为该任务停滞了。
-- 在某些特定场景下，提供有意义的文案，帮助用户明白哪个任务正在进行中，eg：正在上传照片。
-- 如果能知道用户的等待时间，可以使用组件 Progress 来替代。
-- 可通过控制 ActivityIndicator 运动的快慢，来表明进程处理的速度。
+### Rules
+- Don't stop activity indicator if the task is not completed.
+- By providing meaningful texts under certain circumstances can help user understand which task is in progress. eg: uploading photos.
+- If you know the user's waiting time, you can use `Progress` instead.
 
 
 ## API
@@ -22,17 +20,17 @@ Support WEB, React-Native.
 <ActivityIndicator />
 <ActivityIndicator color="white" />
 <ActivityIndicator size="large" />
-<ActivityIndicator text="正在加载" />
+<ActivityIndicator text="loading" />
 <ActivityIndicator toast />
-<ActivityIndicator toast text="正在加载" />
+<ActivityIndicator toast text="loading" />
 ```
 
 ### ActivityIndicator
 
 Properties | Descrition | Type | Default
 -----------|------------|------|--------
-|  animating  | 显隐状态 | boolean  | true  |
-|  size  | spinner大小，可选`small`/`large` | string  | small  |
-|  toast  | loading样式类型 | boolean  | false  |
-|  text  | loading文本 | string |  -   |
-|  color (`RN only`)  | spinner颜色 | string  | gray  |
+|  animating  | Whether to show the indicator (true, the default) or hide it (false). | boolean  | true  |
+|  size  | Size of the indicator (`small`/`large`) | string  | small  |
+|  toast  | Whether to use toast style | boolean  | false  |
+|  text  | loading text behind the indicator | string |  -   |
+|  color (`RN only`)  | The foreground color of the spinner (default is gray). | string  | gray  |
diff --git a/components/activity-indicator/index.zh-CN.md b/components/activity-indicator/index.zh-CN.md
index 9f115a929a7..a6fceb98057 100644
--- a/components/activity-indicator/index.zh-CN.md
+++ b/components/activity-indicator/index.zh-CN.md
@@ -12,7 +12,6 @@ subtitle: 活动指示器
 - 不要让活动指示器静止，用户会以为该任务停滞了。
 - 在某些特定场景下，提供有意义的文案，帮助用户明白哪个任务正在进行中，eg：正在上传照片。
 - 如果能知道用户的等待时间，可以使用组件 Progress 来替代。
-- 可通过控制 ActivityIndicator 运动的快慢，来表明进程处理的速度。
 
 
 ## API