diff --git a/README.md b/README.md
index ee19d95e..de998871 100644
--- a/README.md
+++ b/README.md
@@ -85,10 +85,20 @@ $ egg-bin dev
 
 Debug egg app with [V8 Inspector Integration](https://nodejs.org/api/debugger.html#debugger_v8_inspector_integration_for_node_js).
 
+automatically detect the protocol used by the targeted runtime, 8.0+ the new 'inspector' protocol is used.
+
 ```bash
 $ egg-bin debug
 ```
 
+##### 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.
+
 ### test
 
 Using [mocha] with [co-mocha] to run test.
diff --git a/lib/cmd/debug.js b/lib/cmd/debug.js
index 242e50a0..7595a9d8 100644
--- a/lib/cmd/debug.js
+++ b/lib/cmd/debug.js
@@ -6,27 +6,27 @@ const Command = require('./dev');
 class DebugCommand extends Command {
   constructor(rawArgv) {
     super(rawArgv);
-    const newDebugger = semver.gte(process.version, '8.0.0');
+    // egg-bin debug --debug-port=6666 --agent=5555 --brk --agent-brk
     this.usage = 'Usage: egg-bin debug [dir] [options]';
     this.options = {
-      // set default to empty so `--inspect` will always pass to fork
-      inspect: {
-        description: 'V8 Inspector port',
-        default() {
-          /* istanbul ignore next */
-          return newDebugger ? '' : undefined;
-        },
+      debug: {
+        alias: 'inspect',
+        description: 'auto detect the protocol used by the targeted runtime, use inspect at 8.x+',
+        default: true,
       },
-      'inspect-brk': {
-        description: 'whether break at start',
+      'debug-port': {
+        description: 'worker debug port, default to 9229(inspect) or 5858(debug)',
       },
-
-      debug: {
-        description: 'legacy debugger',
-        default() {
-          /* istanbul ignore next */
-          return newDebugger ? undefined : '';
-        },
+      'debug-brk': {
+        alias: 'brk',
+        description: 'whether stop at the top of worker initial script',
+      },
+      'debug-agent': {
+        alias: 'agent',
+        description: 'whether debug agent, could pass Number as debugPort, default to 9227(inspect) or 5856(debug)',
+      },
+      'debug-agent-brk': {
+        description: 'whether stop at the top of agent initial script',
       },
     };
     process.env.EGG_DEBUG = 'true';
@@ -35,6 +35,34 @@ class DebugCommand extends Command {
   get description() {
     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;
+
+    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;
+
+    // remove all debug options from execArgv
+    for (const key of Object.keys(debugOptions)) {
+      execArgvObj[key] = undefined;
+    }
+
+    // recreate execArgv array
+    context.execArgv = this.helper.unparseArgv(execArgvObj);
+
+    return context;
+  }
 }
 
 module.exports = DebugCommand;
diff --git a/test/fixtures/demo-app/node_modules/aliyun-egg/index.js b/test/fixtures/demo-app/node_modules/aliyun-egg/index.js
index 95608e45..dc41c309 100644
--- a/test/fixtures/demo-app/node_modules/aliyun-egg/index.js
+++ b/test/fixtures/demo-app/node_modules/aliyun-egg/index.js
@@ -1,7 +1,7 @@
 'use strict';
 
 exports.startCluster = options => {
-  console.log('%j', options);
+  console.log('options: %j', options);
   if (process.execArgv.length) {
     console.log('process.execArgv:', process.execArgv);
   }
diff --git a/test/lib/cmd/debug.test.js b/test/lib/cmd/debug.test.js
index 594cffa3..9ca0d554 100644
--- a/test/lib/cmd/debug.test.js
+++ b/test/lib/cmd/debug.test.js
@@ -13,11 +13,64 @@ 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()
-      .expect('stderr', /Debugger listening/)
-      // node 8 missing "chrome-devtools" url
-      // .expect('stderr', /chrome-devtools:/)
-      .expect('stdout', /"workers":1/)
+      .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('code', 0)
       .end();
   });
@@ -25,7 +78,8 @@ describe('test/lib/cmd/debug.test.js', () => {
   it('should startCluster with port', () => {
     return coffee.fork(eggBin, [ 'debug', '--port', '6001' ], { cwd })
       // .debug()
-      .expect('stderr', /Debugger listening/)
+      .notExpect('stderr', /Debugger listening/)
+      .expect('stdout', /options: {.*"debug":true/)
       .expect('stdout', /"port":6001/)
       .expect('stdout', /"workers":1/)
       .expect('stdout', /"baseDir":".*?demo-app"/)
@@ -35,10 +89,12 @@ describe('test/lib/cmd/debug.test.js', () => {
   });
 
   it('should debug with $NODE_DEBUG_OPTION', () => {
-    const env = Object.assign({}, process.env, { NODE_DEBUG_OPTION: '--inspect=5555' });
+    const env = Object.assign({}, process.env, { NODE_DEBUG_OPTION: '--inspect-brk=6666' });
     return coffee.fork(eggBin, [ 'debug' ], { cwd, env })
-      // .debug()
-      .expect('stderr', /Debugger listening.*5555/)
+      .debug()
+      .notExpect('stderr', /Debugger listening/)
+      .expect('stdout', /options: {.*"debug":6666/)
+      .expect('stdout', /options: {.*"debugBrk":true/)
       .expect('stdout', /"workers":1/)
       .expect('code', 0)
       .end();