diff --git a/README-zh_CN.md b/README-zh_CN.md
index 53317e8daef65b3400e435f7d209021323627f0b..ce54a827a3e2176725e8ece8110a9c7acf620e0e 100644
--- a/README-zh_CN.md
+++ b/README-zh_CN.md
@@ -33,11 +33,22 @@ npm install antd
 - 按需使用
 
   ```jsx
-  import 'antd/lib/index.css'; // 只需在页面入口模块引用一次
   import Datepicker from 'antd/lib/datepicker';
   ReactDOM.render(<Datepicker />, mountNode);
   ```
 
+引入样式：
+
+```jsx
+// only need to import once in entry module
+import 'antd/lib/index.css';
+```
+
+```jsx
+// or less for modifyVars
+import 'antd/style/index.less';
+```
+
 ## 浏览器支持
 
 现代浏览器和 IE8 及以上。
diff --git a/README.md b/README.md
index d1174b2a5fd8c7588f1de35ea9ffee600ab0d265..59f6d91022e3182f7850c77573687b1559bc5013 100644
--- a/README.md
+++ b/README.md
@@ -32,11 +32,22 @@ npm install antd
 - Use on demand
 
   ```jsx
-  import 'antd/lib/index.css'; // only need to import once in entry module
   import Datepicker from 'antd/lib/datepicker';
   ReactDOM.render(<Datepicker />, mountNode);
   ```
 
+Import style:
+
+```jsx
+// only need to import once in entry module
+import 'antd/lib/index.css';
+```
+
+```jsx
+// or less for modifyVars
+import 'antd/style/index.less';
+```
+
 ## Browser Support
 
 Normal browsers and Internet Explorer 8+.
diff --git a/docs/introduce.md b/docs/introduce.md
index b9687ebf2ff7414b167c2b0e3a45ad55f1cbe945..c53132132fe1bceba0fe228c221979cdac666daa 100644
--- a/docs/introduce.md
+++ b/docs/introduce.md
@@ -46,10 +46,19 @@ import Datepicker from 'antd/lib/datepicker';
 ReactDOM.render(<Datepicker />, mountNode);
 ```
 
+引入样式：
+
 ```jsx
 import 'antd/lib/index.css'; // 样式需要在入口处引用一次
 ```
 
+或者引入 less 文件，可用于主题配置：
+
+```jsx
+// or less for modifyVars
+import 'antd/style/index.less';
+```
+
 ## 版本
 
 - 稳定版：[![npm package](http://img.shields.io/npm/v/antd.svg?style=flat-square)](https://www.npmjs.org/package/antd)