diff --git a/MACA.md b/MACA.md
index 00e591a..2128cac 100644
--- a/MACA.md
+++ b/MACA.md
@@ -11,12 +11,12 @@
    gpgcheck=0
    EOF
 
-   ```bash
-   示例
    yum makecache
 
+```
+   示例
   yum install commonlib
-
+```
 - **适配所有 Ubuntu 系统**
 
    ```bash