diff --git a/zh-cn/application-dev/ability/stage-call.md b/zh-cn/application-dev/ability/stage-call.md
index 577bc4c7d84dcc2b238bccb7aea4a4af536781b7..572fd96d37cd9b225dc4b506ea55cb131e00f618 100644
--- a/zh-cn/application-dev/ability/stage-call.md
+++ b/zh-cn/application-dev/ability/stage-call.md
@@ -134,7 +134,7 @@ context.startAbilityByCall({
     console.error(TAG + 'get caller failed with ' + error)
 })
 ```
-在跨设备场景下，需指定对端设备deviceId。应用开发者 根据实际需要做相应处理。具体示例代码如下：
+在跨设备场景下，需指定对端设备deviceId。具体示例代码如下：
 ```ts
 let TAG = '[MainAbility] '
 var caller = undefined
@@ -158,7 +158,7 @@ context.startAbilityByCall({
     console.error(TAG + 'get remote caller failed with ' + error)
 })
 ```
-从DeviceManager获取指定设备的deviceId，具体示例代码如下：
+从DeviceManager获取指定设备的deviceId，getTrustedDeviceListSync接口仅对系统应用开放。具体示例代码如下：
 ```ts
 import deviceManager from '@ohos.distributedHardware.deviceManager';
 var dmClass;