diff --git a/guide/chinese/javascript/arrow-functions/index.md b/guide/chinese/javascript/arrow-functions/index.md
index 9467845e9b..8df8c76494 100644
--- a/guide/chinese/javascript/arrow-functions/index.md
+++ b/guide/chinese/javascript/arrow-functions/index.md
@@ -25,7 +25,8 @@ Arrow函数是用于编写JavaScript函数表达式的新ES6语法。较短的
  var multiply = (x, y) => x * y; 
 ```
 
-您不再需要`function`和`return`关键字，甚至是大括号。
+您不再需要`function`和`return`关键字，甚至是花括号。
+注意：只有在整个功能在同一行的時候才能省略花括号和`return`关键字。不然会报错。
 
 ### 简化了`this`
 
@@ -63,4 +64,4 @@ Arrow函数是用于编写JavaScript函数表达式的新ES6语法。较短的
 
 #### 进一步阅读
 
-[MDN链接](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions)
\ No newline at end of file
+[MDN链接](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions)