diff --git a/index.js b/index.js
index c873693..f4bac3d 100644
--- a/index.js
+++ b/index.js
@@ -2,47 +2,74 @@ var http      = require('http'),
     https     = require('https'),
     fs        = require('fs'),
     net       = require('net'),
+    async     = require("async"),
     url       = require('url'),
     exec      = require('child_process').exec,
     serverMgr = require("./lib/serverMgr"),
-    createCert= require("./lib/createCert");
+    createCert= require("./lib/createCert"),
+    program   = require('commander');
 
-var PROXY_PORT    = 8001,
+program
+    .option('-h, --host [value]', 'hostname,use for https proxy. localhost for default')
+    .option('-t, --type [value]', 'http|https,http for default')
+    .option('-p, --port [value]', 'proxy port , 8001 for default')
+    .parse(process.argv);
+
+var PROXY_PORT    = program.port || 8001,
     T_PROXY_HTTP  = 0,
     T_PROXY_HTTPS = 1,
-    PROXY_TYPE    = T_PROXY_HTTPS,
-    HOSTNAME      = "localhost";
+    PROXY_TYPE    = /https/i.test(program.type)? T_PROXY_HTTPS : T_PROXY_HTTP;
+    HOSTNAME      = program.host || "localhost";
 
 var serverMgrInstance = new serverMgr(),
     httpProxyServer;
 
-if(PROXY_TYPE == T_PROXY_HTTP){
-    httpProxyServer = http.createServer(dealProxyUserHttpReq);
-}else{
 
-    var keyFile = "./cert/tmpCert/__hostname.key".replace(/__hostname/,HOSTNAME),
-        crtFile = "./cert/tmpCert/__hostname.crt".replace(/__hostname/,HOSTNAME);
+async.series([
+    //creat server
+    function(callback){
+        if(PROXY_TYPE == T_PROXY_HTTP){
+            httpProxyServer = http.createServer(dealProxyUserHttpReq);
+            callback(null);
+        }else{
 
-    if(!fs.existsSync(keyFile) || !fs.existsSync(crtFile)){
-        createCert(HOSTNAME,function(){
-            httpProxyServer = https.createServer({
-                key : fs.readFileSync(keyFile),
-                cert: fs.readFileSync(crtFile)
-            },dealProxyUserHttpReq);
-        });
-    }else{
-        httpProxyServer = https.createServer({
-            key : fs.readFileSync(keyFile),
-            cert: fs.readFileSync(crtFile)
-        },dealProxyUserHttpReq);
+            var keyFile = "./cert/tmpCert/__hostname.key".replace(/__hostname/,HOSTNAME),
+                crtFile = "./cert/tmpCert/__hostname.crt".replace(/__hostname/,HOSTNAME);
+
+            if(!fs.existsSync(keyFile) || !fs.existsSync(crtFile)){
+                createCert(HOSTNAME,function(){
+                    httpProxyServer = https.createServer({
+                        key : fs.readFileSync(keyFile),
+                        cert: fs.readFileSync(crtFile)
+                    },dealProxyUserHttpReq);
+                    callback(null);
+                });
+            }else{
+                httpProxyServer = https.createServer({
+                    key : fs.readFileSync(keyFile),
+                    cert: fs.readFileSync(crtFile)
+                },dealProxyUserHttpReq);
+                callback(null);
+            }
+        }        
+    },
+
+    //
+    function(callback){
+        //listen CONNECT method for https over http
+        httpProxyServer.on('connect',dealProxyConnectReq);
+        httpProxyServer.listen(PROXY_PORT);
+        callback(null);
+
+    }],function(err,result){
+        if(!err){
+            console.log( (PROXY_TYPE == T_PROXY_HTTP ? "Http" : "Https") + " proxy started at port " + PROXY_PORT);
+        }else{
+            console.log("err when start proxy server :(");
+            console.log(err);
+        }
     }
-}
-
-//listen CONNECT method for https over http
-httpProxyServer.on('connect',dealProxyConnectReq);
-httpProxyServer.listen(PROXY_PORT);
-console.log( (PROXY_TYPE == T_PROXY_HTTP ? "Http" : "Https") + " proxy started at port " + PROXY_PORT);
-
+);
 
 function dealProxyUserHttpReq(req,res){
     var urlPattern = url.parse(req.url);
diff --git a/package.json b/package.json
index 447f2cf..011611c 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,8 @@
   "description": "https proxy over http",
   "main": "index.js",
   "dependencies": {
-    "async": "~0.9.0"
+    "async": "~0.9.0",
+    "commander": "~2.3.0"
   },
   "devDependencies": {},
   "scripts": {