diff --git a/MACA.md b/MACA.md
index bbd0338..69c7b77 100644
--- a/MACA.md
+++ b/MACA.md
@@ -19,17 +19,17 @@
    yum install maca_sdk
    ```
 
-   ### 2.安装maca_sdk指定版本
+   #### 2.安装maca_sdk指定版本
    ```bash
    yum install maca_sdk-<version>-<release>
    ```
 
-   ### 3.升级maca_sdk到最新版本
+   #### 3.升级maca_sdk到最新版本
    ```bash
    yum upgrade maca_sdk
    ```
 
-   ### 4.卸载maca_sdk
+   #### 4.卸载maca_sdk
    ```bash
    yum remove maca_sdk
    ```