diff --git a/doc/bin.md b/doc/bin.md
index 51d7a7e..90a41b9 100644
--- a/doc/bin.md
+++ b/doc/bin.md
@@ -16,7 +16,7 @@ object
     responseType,类型
     complete 成功失败都执行的回调函数
 }
-````
+```
 ```
 request({