diff --git a/zh-cn/application-dev/reference/apis/js-apis-defaultAppManager.md b/zh-cn/application-dev/reference/apis/js-apis-defaultAppManager.md
index df7d22c9a1810e2e8a7e8c575753a2b2b95b9f7e..aed658b76eca53e6b41d65a1ce7e2333c3c0ee06 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-defaultAppManager.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-defaultAppManager.md
@@ -344,7 +344,6 @@ defaultAppMgr.getDefaultApplicationSync("image/png")
 });
 ```
 
-
 ## defaultAppMgr.setDefaultApplication
 
 setDefaultApplication(type: string, elementName: ElementName, userId?: number): Promise\<void>