diff --git a/zh-cn/application-dev/device-usage-statistics/device-usage-statistics-use-guide.md b/zh-cn/application-dev/device-usage-statistics/device-usage-statistics-use-guide.md
index ef57c58ae762ad603771232bc51968b5749c8432..6fad747aab0e8d81dfd12229f3321e520ed16a6e 100644
--- a/zh-cn/application-dev/device-usage-statistics/device-usage-statistics-use-guide.md
+++ b/zh-cn/application-dev/device-usage-statistics/device-usage-statistics-use-guide.md
@@ -32,8 +32,8 @@ import usageStatistics from '@ohos.resourceschedule.usageStatistics';
 | function setAppGroup(bundleName : string, newGroup : GroupType): Promise>boolean>; | 给应用名是bundleName的应用分组设置成newGroup，返回设置结果是否成功，以promise形式返回。 |
 | function registerAppGroupCallBack(groupCallback: Callback>AppGroupCallbackInfo>, callback: AsyncCallback>boolean>): void | 注册应用分组变化监听回调，返回注册是否成功，当应用分组发生变化时，会给所有已注册的监听者返回回调信息，以callback形式返回。 |
 | function registerAppGroupCallBack(groupCallback: Callback>AppGroupCallbackInfo>): Promise>boolean>; | 注册应用分组变化监听回调，返回注册是否成功，当应用分组发生变化时，会给所有已注册的监听者返回回调信息，以promise形式返回。 |
-| function unRegisterAppGroupCallBack(callback: AsyncCallback>boolean>): void | 解除应用分组监听回调，以callback形式返回。 |
-| function unRegisterAppGroupCallBack(): Promise>boolean>; | 解除应用分组监听回调，以promise形式返回。 |
+| function unregisterAppGroupCallBack(callback: AsyncCallback>boolean>): void | 解除应用分组监听回调，以callback形式返回。 |
+| function unregisterAppGroupCallBack(): Promise>boolean>; | 解除应用分组监听回调，以promise形式返回。 |
 
 ## 开发步骤
 
diff --git a/zh-cn/application-dev/reference/apis/js-apis-resourceschedule-deviceUsageStatistics.md b/zh-cn/application-dev/reference/apis/js-apis-resourceschedule-deviceUsageStatistics.md
index 92d6c5aac1f936203f355cea099653964298aa6e..cefe77ce8bdcd9632db3083da2d979d6d0270745 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-resourceschedule-deviceUsageStatistics.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-resourceschedule-deviceUsageStatistics.md
@@ -1193,9 +1193,9 @@ registerAppGroupCallBack(groupCallback: Callback<AppGroupCallbackInfo>, ca
     }
 ```
 
-## usageStatistics.unRegisterAppGroupCallBack
+## usageStatistics.unregisterAppGroupCallBack
 
-unRegisterAppGroupCallBack(): Promise<void>
+unregisterAppGroupCallBack(): Promise<void>
 
 应用解除分组变化监听，解除通过调用注册接口生成的监听。使用Promise形式返回解除监听是否成功。
 
@@ -1230,19 +1230,19 @@ unRegisterAppGroupCallBack(): Promise<void>
 
 ```javascript
     try{
-        usageStatistics.unRegisterAppGroupCallBack().then( () => {
-            console.log('BUNDLE_ACTIVE unRegisterAppGroupCallBack promise succeeded.');
+        usageStatistics.unregisterAppGroupCallBack().then( () => {
+            console.log('BUNDLE_ACTIVE unregisterAppGroupCallBack promise succeeded.');
         }).catch( err => {
-            console.log('BUNDLE_ACTIVE unRegisterAppGroupCallBack promise failed. errCode is: ' + err.errCode + ',message is: ' + err.errMessage);
+            console.log('BUNDLE_ACTIVE unregisterAppGroupCallBack promise failed. errCode is: ' + err.errCode + ',message is: ' + err.errMessage);
         });
     } catch (error) {
-        console.log('BUNDLE_ACTIVE unRegisterAppGroupCallBack throw error, code is: ' + error.code + ',message is: ' + error.message);
+        console.log('BUNDLE_ACTIVE unregisterAppGroupCallBack throw error, code is: ' + error.code + ',message is: ' + error.message);
     }
 ```
 
-## usageStatistics.unRegisterAppGroupCallBack
+## usageStatistics.unregisterAppGroupCallBack
 
-unRegisterAppGroupCallBack(callback: AsyncCallback<void>): void;
+unregisterAppGroupCallBack(callback: AsyncCallback<void>): void;
 
 应用解除分组变化监听，解除通过调用注册接口生成的监听。使用异步callback形式返回解除监听是否成功。
 
@@ -1275,15 +1275,15 @@ unRegisterAppGroupCallBack(callback: AsyncCallback<void>): void;
 
 ```javascript
     try{
-        usageStatistics.unRegisterAppGroupCallBack(error => {
+        usageStatistics.unregisterAppGroupCallBack(error => {
         if(error) {
-            console.log('BUNDLE_ACTIVE unRegisterAppGroupCallBack callback failed. errCode is: ' + err.errCode + ',message is: ' + err.errMessage);
+            console.log('BUNDLE_ACTIVE unregisterAppGroupCallBack callback failed. errCode is: ' + err.errCode + ',message is: ' + err.errMessage);
         } else {
-            console.log('BUNDLE_ACTIVE unRegisterAppGroupCallBack callback success.');
+            console.log('BUNDLE_ACTIVE unregisterAppGroupCallBack callback success.');
         }
         });
     } catch (error) {
-        console.log('BUNDLE_ACTIVE unRegisterAppGroupCallBack throw error, code is: ' + error.code + ',message is: ' + error.message);
+        console.log('BUNDLE_ACTIVE unregisterAppGroupCallBack throw error, code is: ' + error.code + ',message is: ' + error.message);
     }
 ```