diff --git a/en/application-dev/device-usage-statistics/device-usage-statistics-dev-guide.md b/en/application-dev/device-usage-statistics/device-usage-statistics-dev-guide.md
index 249b1196131c0e5045409167ffb5d7ff88027e7c..f18f59468d0650400adfb50b87645c763a740b9c 100644
--- a/en/application-dev/device-usage-statistics/device-usage-statistics-dev-guide.md
+++ b/en/application-dev/device-usage-statistics/device-usage-statistics-dev-guide.md
@@ -23,7 +23,7 @@ import stats from '@ohos.bundleState';
 | function queryAppUsagePriorityGroup(): Promise<number>; | Queries the priority group of this application. This API uses a promise to return the result.|
 | function isIdleState(bundleName: string, callback: AsyncCallback<boolean>): void | Checks whether the application specified by **bundleName** is in the idle state. |
 | function getRecentlyUsedModules(callback: AsyncCallback<BundleActiveModuleInfo>): void | Obtains the number of FA usage records specified by **1000**.|
-| function getRecentlyUsedModules(maxNum : number, callback: AsyncCallback<BundleActiveModuleInfo>): void | Obtains the number of FA usage records specified by **maxNum**.|
+| function getRecentlyUsedModules(maxNum: number, callback: AsyncCallback<BundleActiveModuleInfo>): void | Obtains the number of FA usage records specified by **maxNum**.|
 | function queryAppNotificationNumber(begin: number, end: number, callback: AsyncCallback<Array<BundleActiveEventState>>): void | Queries the number of notifications from all applications based on the specified start time and end time.|
 | function queryBundleActiveEventStates(begin: number, end: number, callback: AsyncCallback<Array<BundleActiveEventState>>): void | Queries statistics about system events (hibernation, wakeup, unlocking, and screen locking) that occur between the specified start time and end time.|
 | function queryAppUsagePriorityGroup(bundleName : string, callback: AsyncCallback<number>): void | Queries the priority group of the application specified by **bundleName**. This API uses an asynchronous callback to return the result.|
diff --git a/en/application-dev/reference/apis/js-apis-deviceUsageStatistics.md b/en/application-dev/reference/apis/js-apis-deviceUsageStatistics.md
index 2636b9ecefe9dbcc3b0a4589169d3d8bacef8855..50a7dd1ebe5e6b743fff84a0429e68d7395227f3 100644
--- a/en/application-dev/reference/apis/js-apis-deviceUsageStatistics.md
+++ b/en/application-dev/reference/apis/js-apis-deviceUsageStatistics.md
@@ -486,7 +486,7 @@ Obtains the number of FA usage records specified by **maxNum**. This API uses a
 
 getRecentlyUsedModules(callback: AsyncCallback<Array<BundleActiveModuleInfo>>): void
 
-Obtains the number of FA usage records. This API uses an asynchronous callback to return the records sorted by time (most recent first).
+This API uses an asynchronous callback to return at most 1000 records sorted by time (most recent first).
 
 **Required permissions**: ohos.permission.BUNDLE_ACTIVE_INFO
 
diff --git a/zh-cn/application-dev/device-usage-statistics/device-usage-statistics-dev-guide.md b/zh-cn/application-dev/device-usage-statistics/device-usage-statistics-dev-guide.md
index be8b1d926fa528a13b053f781145405bd79fe842..cb1da3e1ba31a213a90756f5743180f4e984020a 100644
--- a/zh-cn/application-dev/device-usage-statistics/device-usage-statistics-dev-guide.md
+++ b/zh-cn/application-dev/device-usage-statistics/device-usage-statistics-dev-guide.md
@@ -23,10 +23,10 @@ import stats from '@ohos.bundleState';
 | function queryAppUsagePriorityGroup(): Promise<number>; | 查询当前应用的使用优先级群组。promise形式。 |
 | function isIdleState(bundleName: string, callback: AsyncCallback<boolean>): void | 判断指定Bundle Name的应用当前是否是空闲状态。 |
 | function getRecentlyUsedModules(callback: AsyncCallback<BundleActiveModuleInfo>): void | 查询FA使用记录，返回不超过1000条FA使用记录。 |
-| function getRecentlyUsedModules(maxNum : number, callback: AsyncCallback<BundleActiveModuleInfo>): void | 根据maxNum，查询FA使用记录，返回不超过maxNum条FA使用记录，若不填写maxNum参数，则默认maxNum值为1000。 |
+| function getRecentlyUsedModules(maxNum: number, callback: AsyncCallback<BundleActiveModuleInfo>): void | 根据maxNum，查询FA使用记录，返回不超过maxNum条FA使用记录。 |
 | function queryAppNotificationNumber(begin: number, end: number, callback: AsyncCallback<Array<BundleActiveEventState>>): void | 通过指定起始和结束时间查询所有应用的通知次数。 |
 | function queryBundleActiveEventStates(begin: number, end: number, callback: AsyncCallback<Array<BundleActiveEventState>>): void | 通过指定起始和结束时间查询系统事件（休眠、唤醒、解锁、锁屏）统计信息。 |
-| function queryAppUsagePriorityGroup(bundleName : string, callback: AsyncCallback<number>): void | 查询当前调用者应用或者指定应用的使用优先级群组。callback形式。 |
+| function queryAppUsagePriorityGroup(bundleName : string, callback: AsyncCallback<number>): void | 查询指定应用的使用优先级群组。callback形式。 |
 | function queryAppUsagePriorityGroup(bundleName? : string): Promise<number>; | 查询当前调用者应用或者指定应用的使用优先级群组。promise形式。 |
 | function setBundleGroup(bundleName : string, newGroup: GroupType, callback: AsyncCallback>boolean>): void | 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callback形式返回。 |
 | function setBundleGroup(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。 |
diff --git a/zh-cn/application-dev/reference/apis/js-apis-deviceUsageStatistics.md b/zh-cn/application-dev/reference/apis/js-apis-deviceUsageStatistics.md
index 06438b1f7dcf9815b302258cc65faa6ca89a0f6e..6fc85a7fbd3e206b97ca48f2ddd4c4a68ddb6a26 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-deviceUsageStatistics.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-deviceUsageStatistics.md
@@ -485,7 +485,7 @@ getRecentlyUsedModules(maxNum?: number): Promise<Array<BundleActiveModuleI
 
 getRecentlyUsedModules(callback: AsyncCallback<Array<BundleActiveModuleInfo>>): void
 
-查询FA使用记录。使用CallBack形式返回数量为1000的值，FA使用记录由近及远排序。
+查询FA使用记录。使用CallBack形式返回数量不超过1000条FA使用记录（由近及远排序）。
 
 **需要权限**：ohos.permission.BUNDLE_ACTIVE_INFO
 
@@ -608,7 +608,7 @@ queryAppUsagePriorityGroup(callback: AsyncCallback<number>): void
 
 | 参数名        | 类型                    | 必填   | 说明                                       |
 | ---------- | --------------------- | ---- | ---------------------------------------- |
-| callback   | AsyncCallback<number> | 是    | 指定的CallBack回调方法。返回查询的应用分组。               |
+| callback   | AsyncCallback<number> | 是    | 指定的CallBack回调方法。返回当前应用的分组。               |
 
 **示例**：
 
@@ -639,7 +639,7 @@ queryAppUsagePriorityGroup(bundleName : string, callback: AsyncCallback<numbe
 | 参数名        | 类型                    | 必填   | 说明                                       |
 | ---------- | --------------------- | ---- | ---------------------------------------- |
 | bundleName | string                | 是    | 查询指定bundleName对应应用的分组。 |
-| callback   | AsyncCallback<number> | 是    | 指定的CallBack回调方法。返回查询的应用分组。               |
+| callback   | AsyncCallback<number> | 是    | 指定的CallBack回调方法。返回制指定bundleName的应用分组。|
 
 **示例**：