diff --git a/zh-cn/device-dev/subsystems/subsys-dfx-hisysevent-listening.md b/zh-cn/device-dev/subsystems/subsys-dfx-hisysevent-listening.md
index b42a258f2c716c1a1d5b36e337341547f89eef4b..01bb60ea61e09e854ab1e25c7bf702cb3f94091f 100644
--- a/zh-cn/device-dev/subsystems/subsys-dfx-hisysevent-listening.md
+++ b/zh-cn/device-dev/subsystems/subsys-dfx-hisysevent-listening.md
@@ -77,7 +77,7 @@ HiSysEvent提供了跨进程订阅机制，开发者可以通过注册订阅接
         void OnServiceDied();
     };
 
-    #endif DEMO_LISTENER_H
+    #endif // DEMO_LISTENER_H
     ```
 
     增加DemoListener.cpp文件，在DemoListener类中根据实际需求自定义订阅回调接口的实现逻辑：
diff --git a/zh-cn/device-dev/subsystems/subsys-dfx-hisysevent-query.md b/zh-cn/device-dev/subsystems/subsys-dfx-hisysevent-query.md
index 426b6117382fc656a5d2d061c79aa8aa9c69813c..48867c40c869535913b25cf344fd16b7d80b5c3c 100644
--- a/zh-cn/device-dev/subsystems/subsys-dfx-hisysevent-query.md
+++ b/zh-cn/device-dev/subsystems/subsys-dfx-hisysevent-query.md
@@ -55,7 +55,7 @@ C++接口实例。
 
     -   实现对应的查询回调接口：
 
-        void HiSysEventQueryCallBack::OnQuery\(const ::std::vector<std::string\>& sysEvent, const ::std::vector<int64\_t\>& seq\)
+        void HiSysEventQueryCallBack::OnQuery\(const ::std::vector&lt;std::string&gt;& sysEvent, const ::std::vector<int64\_t\>& seq\)
 
         void HiSysEventQueryCallBack::OnComplete\(int32\_t reason, int32\_t total\)