diff --git a/.gitignore b/.gitignore
index d8340224..348042ed 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,8 @@ coverage/
 !test/fixtures/demo-app/node_modules/aliyun-egg/node_modules/
 !test/fixtures/test-files-glob/**
 !test/fixtures/test-files-stack/node_modules/
+!test/fixtures/example/node_modules/
+**/run/*.json
 .tmp
 .vscode
 *.log
diff --git a/README.md b/README.md
index de998871..2c6bc23a 100644
--- a/README.md
+++ b/README.md
@@ -87,17 +87,17 @@ Debug egg app with [V8 Inspector Integration](https://nodejs.org/api/debugger.ht
 
 automatically detect the protocol used by the targeted runtime, 8.0+ the new 'inspector' protocol is used.
 
+use [inspector-proxy](https://github.com/whxaxes/inspector-proxy) to proxy worker debug, so you don't need to worry about reload.
+
 ```bash
-$ egg-bin debug
+$ egg-bin debug --debug-port=9229 --proxy=9999
 ```
 
 ##### options
 
 - all `egg-bin dev` options is accepted.
-- `--debug-port=6666` worker debug port, default to 9229(inspect) or 5858(debug), also has `--inspect` alias.
-- `--debug-brk` whether stop at the top of worker initial script, also has `--brk` alias.
-- `--debug-agent=7777` whether debug agent, could pass Number as debugPort, default to 9227(inspect) or 5856(debug), also has `--agent` alias.
-- `--debug-agent-brk` whether stop at the top of agent initial script.
+- `--proxy=9999` worker debug proxy port.
+
 
 ### test
 
diff --git a/lib/cmd/debug.js b/lib/cmd/debug.js
index 63ea2a4a..7a4adf00 100644
--- a/lib/cmd/debug.js
+++ b/lib/cmd/debug.js
@@ -1,31 +1,41 @@
 'use strict';
 
+const cp = require('child_process');
+const chalk = require('chalk');
+const InspectorProxy = require('inspector-proxy');
+const debug = require('debug')('egg-bin');
+const semver = require('semver');
 const Command = require('./dev');
+const newDebugger = semver.gte(process.version, '8.0.0');
 
 class DebugCommand extends Command {
   constructor(rawArgv) {
     super(rawArgv);
-    // egg-bin debug --debug-port=6666 --agent=5555 --brk --agent-brk
     this.usage = 'Usage: egg-bin debug [dir] [options]';
     this.options = {
-      debug: {
-        alias: 'inspect',
-        description: 'auto detect the protocol used by the targeted runtime, use inspect at 8.x+',
-        default: true,
-      },
-      'debug-port': {
-        description: 'worker debug port, default to 9229(inspect) or 5858(debug)',
+      // set default to empty so `--inspect` will always pass to fork
+      inspect: {
+        description: 'V8 Inspector port',
+        default() {
+          /* istanbul ignore next */
+          return newDebugger ? '' : undefined;
+        },
       },
-      'debug-brk': {
-        alias: 'brk',
-        description: 'whether stop at the top of worker initial script',
+      'inspect-brk': {
+        description: 'whether break at start',
       },
-      'debug-agent': {
-        alias: 'agent',
-        description: 'whether debug agent, could pass Number as debugPort, default to 9227(inspect) or 5856(debug)',
+
+      debug: {
+        description: 'legacy debugger',
+        default() {
+          /* istanbul ignore next */
+          return newDebugger ? undefined : '';
+        },
       },
-      'debug-agent-brk': {
-        description: 'whether stop at the top of agent initial script',
+
+      proxy: {
+        description: 'worker debug proxy port',
+        default: 9999,
       },
     };
     process.env.EGG_DEBUG = 'true';
@@ -35,32 +45,35 @@ class DebugCommand extends Command {
     return 'Start server at local debug mode';
   }
 
-  get context() {
-    const context = super.context;
-    const { argv, execArgvObj, debugOptions, debugPort } = context;
-
-    // use debugPort extract from `--inspect=9999 / --debug-port=1111` etc, if not provide just pass true
-    argv.debug = debugPort || true;
+  * run(context) {
+    const proxyPort = context.argv.proxy;
+    context.argv.proxy = undefined;
 
-    if (debugOptions['inspect-brk'] || debugOptions['debug-brk']) {
-      argv.debugBrk = true;
-    }
-
-    // remove unused
-    argv['debug-port'] = undefined;
-    argv['debug-brk'] = undefined;
-    argv['debug-agent'] = undefined;
-    argv['debug-agent-brk'] = undefined;
+    const eggArgs = yield this.formatArgs(context);
+    const options = {
+      execArgv: context.execArgv,
+      env: Object.assign({ NODE_ENV: 'development', EGG_DEBUG: true }, context.env),
+    };
+    debug('%s %j %j, %j', this.serverBin, eggArgs, options.execArgv, options.env.NODE_ENV);
 
-    // remove all debug options from execArgv
-    for (const key of Object.keys(debugOptions)) {
-      execArgvObj[key] = undefined;
-    }
+    // start egg
+    const child = cp.fork(this.serverBin, eggArgs, options);
 
-    // recreate execArgv array
-    context.execArgv = this.helper.unparseArgv(execArgvObj);
+    // start debug proxy
+    const proxy = new InspectorProxy({ port: proxyPort });
+    // proxy to new worker
+    child.on('message', msg => {
+      if (msg && msg.action === 'debug' && msg.from === 'app') {
+        const { debugPort, pid } = msg.data;
+        debug(`recieve new worker#${pid} debugPort: ${debugPort}`);
+        proxy.start({ debugPort }).then(() => {
+          console.log(chalk.yellow(`Debug Proxy online, now you could attach to ${proxyPort} without worry about reload.`));
+          if (newDebugger) console.log(chalk.yellow(`DevTools → ${proxy.url}`));
+        });
+      }
+    });
 
-    return context;
+    child.on('exit', () => proxy.end());
   }
 }
 
diff --git a/package.json b/package.json
index 91f64f73..0673a782 100644
--- a/package.json
+++ b/package.json
@@ -9,17 +9,20 @@
   },
   "dependencies": {
     "autod": "^2.9.0",
+    "chalk": "^2.1.0",
     "co-mocha": "^1.2.0",
     "common-bin": "^2.7.0",
     "debug": "^3.0.1",
     "detect-port": "^1.2.1",
     "egg-utils": "^2.2.0",
     "globby": "^6.1.0",
+    "inspector-proxy": "^1.0.0",
     "intelli-espower-loader": "^1.0.1",
-    "mocha": "^3.5.0",
+    "mocha": "^3.5.3",
     "mz-modules": "^2.0.0",
-    "nyc": "^11.2.0",
+    "nyc": "^11.2.1",
     "power-assert": "^1.4.4",
+    "semver": "^5.4.1",
     "test-exclude": "^4.1.1",
     "ypkgfiles": "^1.4.0"
   },
@@ -29,12 +32,14 @@
     "babel-register": "^6.4.3",
     "coffee": "^4.1.0",
     "cross-env": "^3.1.3",
+    "egg": "^1.8.0",
     "egg-ci": "^1.8.0",
+    "egg-mock": "^3.12.0",
     "enzyme": "^2.0.0",
     "eslint": "^4.6.1",
     "eslint-config-egg": "^5.1.1",
     "jsdom": "^8.0.1",
-    "mm": "^2.1.0",
+    "mm": "^2.2.0",
     "mz": "^2.6.0",
     "react": "^0.14.7",
     "react-addons-test-utils": "^0.14.7",
@@ -71,4 +76,4 @@
   "ci": {
     "version": "6, 8"
   }
-}
\ No newline at end of file
+}
diff --git a/test/fixtures/example/app/router.js b/test/fixtures/example/app/router.js
new file mode 100644
index 00000000..8bfd2442
--- /dev/null
+++ b/test/fixtures/example/app/router.js
@@ -0,0 +1,7 @@
+'use strict';
+
+module.exports = app => {
+  app.get('/', function* () {
+    this.body = 'hi, egg';
+  });
+};
diff --git a/test/fixtures/example/config/config.default.js b/test/fixtures/example/config/config.default.js
new file mode 100644
index 00000000..762c2647
--- /dev/null
+++ b/test/fixtures/example/config/config.default.js
@@ -0,0 +1,3 @@
+'use strict';
+
+exports.key = '12345';
diff --git a/test/fixtures/example/node_modules/egg/index.js b/test/fixtures/example/node_modules/egg/index.js
new file mode 100644
index 00000000..2060e8f7
--- /dev/null
+++ b/test/fixtures/example/node_modules/egg/index.js
@@ -0,0 +1,8 @@
+'use strict';
+
+module.exports = require('../../../../../node_modules/egg');
+
+setTimeout(() => {
+  console.log('exit by master test end')
+  process.exit(0);
+}, 5000);
diff --git a/test/fixtures/example/node_modules/egg/package.json b/test/fixtures/example/node_modules/egg/package.json
new file mode 100644
index 00000000..6697ad3f
--- /dev/null
+++ b/test/fixtures/example/node_modules/egg/package.json
@@ -0,0 +1,3 @@
+{
+  "name": "egg"
+}
diff --git a/test/fixtures/example/package.json b/test/fixtures/example/package.json
new file mode 100644
index 00000000..8389bd69
--- /dev/null
+++ b/test/fixtures/example/package.json
@@ -0,0 +1,3 @@
+{
+  "name": "example"
+}
\ No newline at end of file
diff --git a/test/lib/cmd/debug.test.js b/test/lib/cmd/debug.test.js
index 9ca0d554..59cb0992 100644
--- a/test/lib/cmd/debug.test.js
+++ b/test/lib/cmd/debug.test.js
@@ -2,8 +2,9 @@
 
 const path = require('path');
 const coffee = require('coffee');
-const mm = require('mm');
+const mm = require('egg-mock');
 const net = require('net');
+const semver = require('semver');
 
 describe('test/lib/cmd/debug.test.js', () => {
   const eggBin = require.resolve('../../../bin/egg-bin.js');
@@ -13,64 +14,11 @@ describe('test/lib/cmd/debug.test.js', () => {
 
   it('should startCluster success', () => {
     return coffee.fork(eggBin, [ 'debug' ], { cwd })
-      .debug()
-      .notExpect('stderr', /Debugger listening/)
-      .expect('stdout', /options: {.*"debug":true/)
-      .notExpect('stdout', /process.execArgv:/)
-      .expect('code', 0)
-      .end();
-  });
-
-  it('--debug-port=7777', () => {
-    return coffee.fork(eggBin, [ 'debug', '--debug-port=7777' ], { cwd })
-      // .debug()
-      .notExpect('stderr', /Debugger listening/)
-      .expect('stdout', /options: {.*"debug":7777/)
-      .notExpect('stdout', /process.execArgv:/)
-      .expect('code', 0)
-      .end();
-  });
-
-  it('--inspect=7777', () => {
-    return coffee.fork(eggBin, [ 'debug', '--inspect=7777' ], { cwd })
-      // .debug()
-      .notExpect('stderr', /Debugger listening/)
-      .expect('stdout', /options: {.*"debug":7777/)
-      .notExpect('stdout', /options: {.*"inspect"/)
-      .notExpect('stdout', /process.execArgv:/)
-      .expect('code', 0)
-      .end();
-  });
-
-  it('--debug-brk --debug-agent --debug-agent-brk --inspect-brk', () => {
-    return coffee.fork(eggBin, [ 'debug', '--debug-brk', '--debug-agent', '--debug-agent-brk', '--inspect-brk' ], { cwd })
-      // .debug()
-      .notExpect('stderr', /Debugger listening/)
-      .expect('stdout', /options: {.*"debugBrk":true,"debugAgent":true,"debugAgentBrk":true,"debug":true/)
-      .notExpect('stdout', /options: {.*"inspect"/)
-      .notExpect('stdout', /process.execArgv:/)
-      .expect('code', 0)
-      .end();
-  });
-
-  it('--brk --agent', () => {
-    return coffee.fork(eggBin, [ 'debug', '--brk', '--agent' ], { cwd })
       // .debug()
-      .notExpect('stderr', /Debugger listening/)
-      .expect('stdout', /options: {.*"debugBrk":true,"debugAgent":true,"debug":true/)
-      .notExpect('stdout', /options: {.*"inspect"/)
-      .notExpect('stdout', /process.execArgv:/)
-      .expect('code', 0)
-      .end();
-  });
-
-  it('--agent=6666', () => {
-    return coffee.fork(eggBin, [ 'debug', '--agent=6666' ], { cwd })
-      // .debug()
-      .notExpect('stderr', /Debugger listening/)
-      .expect('stdout', /options: {"debugAgent":6666,"debug":true/)
-      .notExpect('stdout', /options: {.*"inspect"/)
-      .notExpect('stdout', /process.execArgv:/)
+      .expect('stderr', /Debugger listening/)
+      // node 8 missing "chrome-devtools" url
+      // .expect('stderr', /chrome-devtools:/)
+      .expect('stdout', /"workers":1/)
       .expect('code', 0)
       .end();
   });
@@ -78,8 +26,7 @@ describe('test/lib/cmd/debug.test.js', () => {
   it('should startCluster with port', () => {
     return coffee.fork(eggBin, [ 'debug', '--port', '6001' ], { cwd })
       // .debug()
-      .notExpect('stderr', /Debugger listening/)
-      .expect('stdout', /options: {.*"debug":true/)
+      .expect('stderr', /Debugger listening/)
       .expect('stdout', /"port":6001/)
       .expect('stdout', /"workers":1/)
       .expect('stdout', /"baseDir":".*?demo-app"/)
@@ -89,12 +36,10 @@ describe('test/lib/cmd/debug.test.js', () => {
   });
 
   it('should debug with $NODE_DEBUG_OPTION', () => {
-    const env = Object.assign({}, process.env, { NODE_DEBUG_OPTION: '--inspect-brk=6666' });
+    const env = Object.assign({}, process.env, { NODE_DEBUG_OPTION: '--inspect=5555' });
     return coffee.fork(eggBin, [ 'debug' ], { cwd, env })
-      .debug()
-      .notExpect('stderr', /Debugger listening/)
-      .expect('stdout', /options: {.*"debug":6666/)
-      .expect('stdout', /options: {.*"debugBrk":true/)
+      // .debug()
+      .expect('stderr', /Debugger listening.*5555/)
       .expect('stdout', /"workers":1/)
       .expect('code', 0)
       .end();
@@ -118,4 +63,29 @@ describe('test/lib/cmd/debug.test.js', () => {
         .end();
     });
   });
+
+  describe('real egg', () => {
+    const cwd = path.join(__dirname, '../../fixtures/example');
+    const newDebugger = semver.gte(process.version, '8.0.0');
+
+    it('should proxy', function* () {
+      const app = coffee.fork(eggBin, [ 'debug' ], { cwd });
+      // app.debug();
+      if (newDebugger) app.expect('stdout', /DevTools → chrome-devtools:.*:9999/);
+      yield app.expect('stderr', /Debugger listening/)
+        .expect('stdout', /Debug Proxy online, now you could attach to 9999/)
+        .expect('code', 0)
+        .end();
+    });
+
+    it('should proxy with port', function* () {
+      const app = coffee.fork(eggBin, [ 'debug', '--proxy=6666' ], { cwd });
+      // app.debug();
+      if (newDebugger) app.expect('stdout', /DevTools → chrome-devtools:.*:6666/);
+      yield app.expect('stderr', /Debugger listening/)
+        .expect('stdout', /Debug Proxy online, now you could attach to 6666/)
+        .expect('code', 0)
+        .end();
+    });
+  });
 });
diff --git a/test/lib/cmd/dev.test.js b/test/lib/cmd/dev.test.js
index 36411684..cdaf7c13 100644
--- a/test/lib/cmd/dev.test.js
+++ b/test/lib/cmd/dev.test.js
@@ -130,14 +130,6 @@ describe('test/lib/cmd/dev.test.js', () => {
     });
   });
 
-  it.skip('should startCluster with execArgv --debug', done => {
-    coffee.fork(eggBin, [ 'dev', '--debug=7000' ], { cwd })
-      .debug()
-      .expect('stderr', /Debugger listening on .*7000/)
-      .expect('code', 0)
-      .end(done);
-  });
-
   it('should startCluster with execArgv --inspect', done => {
     coffee.fork(eggBin, [ 'dev', '--inspect=7000' ], { cwd })
       // .debug()