diff --git a/components/cascader/index.jsx b/components/cascader/index.jsx
index 690da1f8a0..bf921e6b38 100644
--- a/components/cascader/index.jsx
+++ b/components/cascader/index.jsx
@@ -13,9 +13,7 @@ export default class Cascader extends React.Component {
     popupPlacement: 'bottomLeft',
     onChange() {},
     options: [],
-    displayRender(label) {
-      return label.join(' / ');
-    },
+    displayRender: label => label.join(' / '),
     disabled: false,
     allowClear: true,
     onPopupVisibleChange() {},
diff --git a/components/cascader/index.md b/components/cascader/index.md
index 1857abff10..d6454068fe 100644
--- a/components/cascader/index.md
+++ b/components/cascader/index.md
@@ -27,7 +27,7 @@
 | defaultValue | 默认的选中项 | array  |[] |
 | value | 指定选中项 | array  | - |
 | onChange | 选择完成后的回调 | `function(value, selectedOptions)` | - |
-| displayRender | 选择后展示的渲染函数 | `function(label)`` | `function(label) { return label.join(' / ') }` |
+| displayRender | 选择后展示的渲染函数 | `function(label)`` | `label => label.join(' / ')` |
 | style | 自定义样式 | string | - |
 | className | 自定义类名 | string | - |
 | popupClassName | 自定义浮层类名 | string | - |