diff --git a/zh-cn/application-dev/reference/apis/js-apis-hisysevent.md b/zh-cn/application-dev/reference/apis/js-apis-hisysevent.md
index 8c5ca7ee5a23639d8de0b6fbdd4bc282a619403b..174ec0ebb77cd895952b59a0939689749c7da52d 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-hisysevent.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-hisysevent.md
@@ -207,7 +207,7 @@ let ret = hiSysEvent.addWatcher(watcher)
 
 ## hiSysEvent.removeWatcher
 
-removeWatcher(wathcer: Watcher): number
+removeWatcher(watcher: Watcher): number
 
 取消订阅系统事件，接收[Watcher](#watcher)类型的对象作为事件参数。