diff --git a/README.md b/README.md
index a899449..4a6857c 100644
--- a/README.md
+++ b/README.md
@@ -242,6 +242,8 @@
 * CoffeeScript
     * [CoffeeScript Cookbook](http://island205.github.io/coffeescript-cookbook.github.com/)
     * [The Little Book on CoffeeScript中文版](http://island205.github.io/tlboc/)
+* ExtJS
+    * [Ext4.1.0 中文文档](http://extjs-doc-cn.github.io/ext4api/)  
 * [Chrome扩展及应用开发](http://www.ituring.com.cn/minibook/950)  
 
 ### PHP