diff --git a/doc/pkg/middle/middle.md b/doc/pkg/middle/middle.md
index 51eec50..6988095 100644
--- a/doc/pkg/middle/middle.md
+++ b/doc/pkg/middle/middle.md
@@ -29,7 +29,7 @@ type MiddleToolsInterface interface {
 }
 
 ### 插件的New方法规定为  NewMiddleWare() 
-    每个插件都要定义NewMiddleWare()
+    每个插件都要定义 NewMiddleWare()