diff --git a/zh-cn/application-dev/reference/apis/js-apis-appmanager.md b/zh-cn/application-dev/reference/apis/js-apis-appmanager.md
index 7688a46b0bec337a7cecc801e2855afd576328c6..8f5fdf724cfe904c23285efcfce9e9cc68996192 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-appmanager.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-appmanager.md
@@ -210,7 +210,7 @@ getProcessRunningInfos(callback: AsyncCallback\<Array\<ProcessRunningInfo>>): vo
 
 registerApplicationStateObserver(observer: ApplicationStateObserver): number;
 
-注册应用程序状态观测器。
+注册全部应用程序状态观测器。
 
 **需要权限**：ohos.permission.RUNNING_STATE_OBSERVER
 
@@ -244,6 +244,48 @@ registerApplicationStateObserver(observer: ApplicationStateObserver): number;
   const observerCode = app.registerApplicationStateObserver(applicationStateObserver);
   console.log('-------- observerCode: ---------', observerCode);
 
+  ```
+
+## appManager.registerApplicationStateObserver<sup>9+</sup>
+
+registerApplicationStateObserver(observer: ApplicationStateObserver, bundleNameList: Array<string>): number;
+
+注册指定应用程序状态观测器。
+
+**需要权限**：ohos.permission.RUNNING_STATE_OBSERVER
+
+**系统能力**：SystemCapability.Ability.AbilityRuntime.Core
+
+**系统API**：该接口为系统接口，三方应用不支持调用。
+
+**参数：**
+
+| 参数名 | 类型 | 必填 | 说明 |
+| -------- | -------- | -------- | -------- |
+| observer | ApplicationStateObserver | 否 | 返回观察者的数字代码。 |
+| bundleNameList | Array<string> | 否 | 表示需要注册监听的bundleName数组。最大值128。 |
+
+**示例：**
+    
+  ```js
+  var applicationStateObserver = {
+    onForegroundApplicationChanged(appStateData) {
+        console.log('------------ onForegroundApplicationChanged -----------', appStateData);
+    },
+    onAbilityStateChanged(abilityStateData) {
+        console.log('------------ onAbilityStateChanged -----------', abilityStateData);
+    },
+    onProcessCreated(processData) {
+        console.log('------------ onProcessCreated -----------', processData);
+    },
+    onProcessDied(processData) {
+        console.log('------------ onProcessDied -----------', processData);
+    }
+  }
+  var bundleNameList = ['bundleName1', 'bundleName2'];
+  const observerCode = app.registerApplicationStateObserver(applicationStateObserver, bundleNameList);
+  console.log('-------- observerCode: ---------', observerCode);
+
   ```
 ## appManager.unregisterApplicationStateObserver<sup>8+</sup>