diff --git a/zh-cn/application-dev/security/permission-list.md b/zh-cn/application-dev/security/permission-list.md
index 89e1a43682deb05497299b87be614f248b495d89..9fd048c440ad9ec7338d8bd0498df9be33542bd9 100644
--- a/zh-cn/application-dev/security/permission-list.md
+++ b/zh-cn/application-dev/security/permission-list.md
@@ -1860,7 +1860,7 @@
 
 ## ohos.permission.ACCESS_SCREEN_LOCK_INNER
 
-允许应用调用锁屏服务的系统API。
+允许应用使用锁屏服务的锁定屏幕、发送锁屏事件、系统事件回调功能。
 
 **权限级别**：system_core