diff --git a/zh-cn/application-dev/background-task-management/background-task-dev-guide.md b/zh-cn/application-dev/background-task-management/background-task-dev-guide.md
index 6c1708e7a3d3ae23eade9c5c14877fb2f6697c48..77ca8ce8be0fd99ea5d5f04e2b1dd332c76f179b 100644
--- a/zh-cn/application-dev/background-task-management/background-task-dev-guide.md
+++ b/zh-cn/application-dev/background-task-management/background-task-dev-guide.md
@@ -133,10 +133,11 @@ ohos.permission.KEEP_BACKGROUND_RUNNING
       "package": "com.example.myapplication",
       "abilities": [
         {
+            // 后台模式类型
           "backgroundModes": [
             "dataTransfer",
             "location"
-          ], // 后台模式类型
+          ],
           "type": "service"  // ability类型为service
         }
       ],