diff --git a/README.md b/README.md
index 3d80031..d121bf9 100644
--- a/README.md
+++ b/README.md
@@ -6,16 +6,16 @@
 
 1. 安装python3
 2. 安装依赖库
-` shall
+``` shall
 python3 -m pip install pillow
 python3 -m pip install psutil
-`
+```
 3. 运行
-` shall
+``` shall
 cd {path_to_your_pyfile}
 python3 main.py
-`
+```
 4. 退出 
-exit
+`exit`
 
 ### END
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