diff --git a/zh-cn/application-dev/reference/apis/js-apis-launcherBundleManager.md b/zh-cn/application-dev/reference/apis/js-apis-launcherBundleManager.md
index c0eee70d41e4a9dd645b472388f8821dc56ca5cb..138dbf7b07087aa6fdd3483318a1cfb7ac09e2f6 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-launcherBundleManager.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-launcherBundleManager.md
@@ -51,9 +51,11 @@ getLauncherAbilityInfo(bundleName: string, userId: number, callback: AsyncCallba
 
 ```ts
 import launcherBundleManager from '@ohos.bundle.launcherBundleManager';
+import { BusinessError } from '@ohos.base';
 
 try {
-    launcherBundleManager.getLauncherAbilityInfo('com.example.demo', 100, (errData, data) => {
+    launcherBundleManager.getLauncherAbilityInfo('com.example.demo', 100,
+        (errData: BusinessError, data: launcherBundleManager.LauncherAbilityInfo[]) => {
         if (errData !== null) {
             console.error(`errData is errCode:${errData.code}  message:${errData.message}`);
         } else {
@@ -61,7 +63,9 @@ try {
         }
     })
 } catch (errData) {
-    console.error(`errData is errCode:${errData.code}  message:${errData.message}`);
+    let code = (errData as BusinessError).code;
+    let message = (errData as BusinessError).message;
+    console.error(`errData is errCode:${code}  message:${message}`);
 }
 ```
 
@@ -101,17 +105,21 @@ getLauncherAbilityInfo(bundleName: string, userId: number) : Promise<Array\<[Lau
 
 **示例：**
 
-```typescript
+```ts
 import launcherBundleManager from '@ohos.bundle.launcherBundleManager';
+import { BusinessError } from '@ohos.base';
 
 try {
-    launcherBundleManager.getLauncherAbilityInfo("com.example.demo", 100).then(data => {
+    launcherBundleManager.getLauncherAbilityInfo("com.example.demo", 100)
+        .then((data: launcherBundleManager.LauncherAbilityInfo[]) => {
         console.log("data is " + JSON.stringify(data));
-    }).catch (errData => {
+    }).catch ((errData: BusinessError) => {
         console.error(`errData is errCode:${errData.code}  message:${errData.message}`);
     })
 } catch (errData) {
-    console.error(`errData is errCode:${errData.code}  message:${errData.message}`);
+    let code = (errData as BusinessError).code;
+    let message = (errData as BusinessError).message;
+    console.error(`errData is errCode:${code}  message:${message}`);
 }
 ```
 
@@ -151,9 +159,11 @@ getAllLauncherAbilityInfo(userId: number, callback: AsyncCallback<Array\<[Launch
 
 ```ts
 import launcherBundleManager from '@ohos.bundle.launcherBundleManager';
+import { BusinessError } from '@ohos.base';
 
 try {
-    launcherBundleManager.getAllLauncherAbilityInfo(100, (errData, data) => {
+    launcherBundleManager.getAllLauncherAbilityInfo(100,
+        (errData: BusinessError, data: launcherBundleManager.LauncherAbilityInfo[]) => {
         if (errData !== null) {
             console.error(`errData is errCode:${errData.code}  message:${errData.message}`);
         } else {
@@ -161,7 +171,9 @@ try {
         }
     });
 } catch (errData) {
-    console.error(`errData is errCode:${errData.code}  message:${errData.message}`);
+    let code = (errData as BusinessError).code;
+    let message = (errData as BusinessError).message;
+    console.error(`errData is errCode:${code}  message:${message}`);
 }
 ```
 ## launcherBundlemanager.getAllLauncherAbilityInfo<sup>9+</sup>
@@ -200,15 +212,19 @@ getAllLauncherAbilityInfo(userId: number) : Promise<Array\<[LauncherAbilityInfo]
 
 ```ts
 import launcherBundleManager from '@ohos.bundle.launcherBundleManager';
+import { BusinessError } from '@ohos.base';
 
 try {
-    launcherBundleManager.getAllLauncherAbilityInfo(100).then(data => {
+    launcherBundleManager.getAllLauncherAbilityInfo(100)
+        .then((data: launcherBundleManager.LauncherAbilityInfo[]) => {
         console.log("data is " + JSON.stringify(data));
-    }).catch (errData => {
+    }).catch ((errData: BusinessError) => {
         console.error(`errData is errCode:${errData.code}  message:${errData.message}`);
     });
 } catch (errData) {
-    console.error(`errData is errCode:${errData.code}  message:${errData.message}`);
+    let code = (errData as BusinessError).code;
+    let message = (errData as BusinessError).message;
+    console.error(`errData is errCode:${code}  message:${message}`);
 }
 ```
 
@@ -246,9 +262,11 @@ getShortcutInfo(bundleName :string, callback: AsyncCallback<Array\<[ShortcutInfo
 
 ```ts
 import launcherBundleManager from '@ohos.bundle.launcherBundleManager';
+import { BusinessError } from '@ohos.base';
 
 try {
-    launcherBundleManager.getShortcutInfo("com.example.demo", (errData, data) => {
+    launcherBundleManager.getShortcutInfo("com.example.demo",
+        (errData: BusinessError, data: launcherBundleManager.ShortcutInfo[]) => {
         if (errData !== null) {
             console.error(`errData is errCode:${errData.code}  message:${errData.message}`);
         } else {
@@ -256,7 +274,9 @@ try {
         }
     });
 } catch (errData) {
-    console.error(`errData is errCode:${errData.code}  message:${errData.message}`);
+    let code = (errData as BusinessError).code;
+    let message = (errData as BusinessError).message;
+    console.error(`errData is errCode:${code}  message:${message}`);
 }
 ```
 
@@ -294,14 +314,18 @@ getShortcutInfo(bundleName : string) : Promise<Array\<[ShortcutInfo](js-apis-bun
 
 ```ts
 import launcherBundleManager from '@ohos.bundle.launcherBundleManager';
+import { BusinessError } from '@ohos.base';
 
 try {
-    launcherBundleManager.getShortcutInfo("com.example.demo").then(data => {
-        console.log("data is " + JSON.stringify(data));
-    }).catch (errData => {
+    launcherBundleManager.getShortcutInfo("com.example.demo")
+        .then((data: launcherBundleManager.ShortcutInfo[]) => {
+            console.log("data is " + JSON.stringify(data));
+        }).catch ((errData: BusinessError) => {
         console.error(`errData is errCode:${errData.code}  message:${errData.message}`);
     });
 } catch (errData) {
-    console.error(`errData is errCode:${errData.code}  message:${errData.message}`);
+    let code = (errData as BusinessError).code;
+    let message = (errData as BusinessError).message;
+    console.error(`errData is errCode:${code}  message:${message}`);
 }
 ```