diff --git a/README.md b/README.md
index 964f51e..9fe214f 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,25 @@
 # smarGate
-A mobile gateway that exposes the intranet service points. Free, after testing, select machine and open source. It contains a Android client app and server program.
+A mobile gateway that exposes the intranet service points. 
+Free, after testing, select machine and open source. 
+It contains a Android client app and server program.
+Usage:
+1、download android client app
+2、register user
+3、remember register key-number（N）
+4、download server program matched you serverOS
+5、modify config file(conf-proxy.xml):
+  <?xml version="1.0" encoding="GBK"?>
+    <app-config code="PROXY" name="proxy-server">
+       <moudle-parameter>
+        <log-level value="LOG_ERROR"/>
+        <log-write-mode value="CONSOLE_ONLY"/>
+        <app-name value="xxxxx [name of service points]." /><!-- need modify -->
+        <app-description value="yyyyy [description of service points]" /><!-- need modify -->
+        <server-address value="visery.net:39001"/>
+        <user-audit value="N:index"/><!-- need modify (N is step 3 return,index is you service point order. EXP:[12345:1])-->
+    </moudle-parameter>
+  </app-config>
+6、excute shell "nohup ./proxy_server -i1000 -o1000 -w8 >/dev/null &" (parameter i:input connections,o:output connections,w:max threads)
+7、login from android client app
+8、create service local proxy in android app
+9、enjoy it！