diff --git a/README.md b/README.md
index d2a7c4f..04f1566 100644
--- a/README.md
+++ b/README.md
@@ -44,6 +44,8 @@ Mac 下
 
 第三步：设置手机的HTTP代理，代理IP地址设置为PC的IP地址，端口为`spy-debugger`的启动端口(默认端口：9888)。
 
+第四步：手机浏览器访问：http://spydebugger.com/cert 安装证书。
+
 第四步：用手机浏览器访问你要调试的页面即可。
 
 ## 自定义选项
diff --git a/lib/config/config.js b/lib/config/config.js
index 5303433..518d193 100644
--- a/lib/config/config.js
+++ b/lib/config/config.js
@@ -1,6 +1,8 @@
 'use strict';
 
 var SPY_WEINRE_DOMAIN = 'spyweinrefortest.com';
+var SPY_DEBUGGER_DOMAIN = 'spydebugger.com';
 
 var config = exports;
-config.SPY_WEINRE_DOMAIN = SPY_WEINRE_DOMAIN;
\ No newline at end of file
+config.SPY_WEINRE_DOMAIN = SPY_WEINRE_DOMAIN;
+config.SPY_DEBUGGER_DOMAIN = SPY_DEBUGGER_DOMAIN;
\ No newline at end of file
diff --git a/lib/proxy/spyProxy.js b/lib/proxy/spyProxy.js
index 308c6fe..699acf2 100644
--- a/lib/proxy/spyProxy.js
+++ b/lib/proxy/spyProxy.js
@@ -7,6 +7,8 @@ var zlib = require('zlib');
 var through = require('through2');
 var config = require('../config/config');
 var htmlUtil = require('../util/htmlUtil');
+var path = require('path');
+var fs = require('fs');
 
 module.exports = {
     createProxy: function createProxy(_ref) {
@@ -31,6 +33,21 @@ module.exports = {
                 }
             },
             requestInterceptor: function requestInterceptor(rOptions, req, res, ssl, next) {
+
+                if (rOptions.hostname === config.SPY_DEBUGGER_DOMAIN && rOptions.path === '/cert') {
+                    var userHome = process.env.HOME || process.env.USERPROFILE;
+                    var certPath = path.resolve(userHome, './node-mitmproxy/node-mitmproxy.ca.crt');
+                    try {
+                        var fileString = fs.readFileSync(certPath);
+                        res.setHeader('Content-Type', 'application/x-x509-ca-cert');
+                        res.end(fileString.toString());
+                    } catch (e) {
+                        console.log(e);
+                        res.end('please create certificate first!!');
+                    }
+                    next();
+                    return;
+                }
                 if (rOptions.hostname === config.SPY_WEINRE_DOMAIN) {
                     rOptions.protocol = 'http:';
                     rOptions.hostname = '127.0.0.1';
diff --git a/package.json b/package.json
index 6b60c52..a675114 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "spy-debugger",
-  "version": "2.0.4",
+  "version": "2.0.5",
   "description": "web page one-stop remote network debugger",
   "main": "lib/index.js",
   "scripts": {
diff --git a/src/config/config.js b/src/config/config.js
index 3295716..dc39b43 100644
--- a/src/config/config.js
+++ b/src/config/config.js
@@ -1,4 +1,6 @@
 const SPY_WEINRE_DOMAIN = 'spyweinrefortest.com';
+const SPY_DEBUGGER_DOMAIN = 'spydebugger.com';
 
 var config = exports;
 config.SPY_WEINRE_DOMAIN = SPY_WEINRE_DOMAIN;
+config.SPY_DEBUGGER_DOMAIN = SPY_DEBUGGER_DOMAIN;
diff --git a/src/proxy/spyProxy.js b/src/proxy/spyProxy.js
index 50cd8c7..6f5add1 100644
--- a/src/proxy/spyProxy.js
+++ b/src/proxy/spyProxy.js
@@ -5,6 +5,8 @@ const zlib = require('zlib');
 const through = require('through2');
 const config = require('../config/config');
 const htmlUtil = require('../util/htmlUtil');
+const path = require('path');
+const fs = require('fs');
 
 module.exports = {
 
@@ -29,6 +31,21 @@ module.exports = {
                 }
             },
             requestInterceptor: (rOptions, req, res, ssl, next) => {
+
+                if (rOptions.hostname === config.SPY_DEBUGGER_DOMAIN && rOptions.path === '/cert'){
+                    var userHome = process.env.HOME || process.env.USERPROFILE;
+                    var certPath = path.resolve(userHome, './node-mitmproxy/node-mitmproxy.ca.crt');
+                    try {
+                        var fileString = fs.readFileSync(certPath);
+                        res.setHeader('Content-Type', 'application/x-x509-ca-cert');
+                        res.end(fileString.toString());
+                    } catch (e) {
+                        console.log(e);
+                        res.end('please create certificate first!!');
+                    }
+                    next();
+                    return;
+                }
                 if (rOptions.hostname === config.SPY_WEINRE_DOMAIN) {
                     rOptions.protocol = 'http:'
                     rOptions.hostname = '127.0.0.1'