diff --git a/README_CN.md b/README_CN.md
index 5ba89a5c6d71093000d26d8b34832f3dd14dc00a..fd74066e84855626fb2d70dc8bf25d2b7bd27d63 100755
--- a/README_CN.md
+++ b/README_CN.md
@@ -15,13 +15,13 @@ flutter boost androidx  分支是:feature/flutter_1.9_androidx_upgrade
 
 代码引入方式:
 
-    ```java
+```java
 
     flutter_boost:
             git:
                 url: 'https://github.com/alibaba/flutter_boost.git'
                 ref: 'feature/flutter_1.9_upgrade'
-    ```
+```
 
 
 # Release Note