diff --git a/.gitignore b/.gitignore
index d7987c7e..a9f91933 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@ coverage/
 !test/fixtures/custom-framework-app/node_modules/
 .tmp
 .vscode
+*.log
diff --git a/README.md b/README.md
index 64c942c6..543433a7 100644
--- a/README.md
+++ b/README.md
@@ -52,6 +52,17 @@ Add `egg-bin` to `package.json` scripts:
 
 ## Command
 
+All the commands support these specific v8 options:
+
+- `--debug`
+- `--inspect`
+- `--harmony*`
+- `--es_staging`
+
+```bash
+$ egg-bin [command] --debug --es_staging
+```
+
 ### dev
 
 Start dev cluster on `local` env, it will start a master, an agent and a worker.
diff --git a/lib/cov_command.js b/lib/cov_command.js
index f953f9e3..9bdd7007 100644
--- a/lib/cov_command.js
+++ b/lib/cov_command.js
@@ -34,6 +34,7 @@ class CovCommand extends Command {
     process.env.istanbul_bin_path = covFile;
     const opt = {
       env: process.env,
+      execArgv: this.helper.formatExecArgv(args),
     };
     const coverageDir = path.join(cwd, 'coverage');
     rimraf.sync(coverageDir);
diff --git a/lib/debug_command.js b/lib/debug_command.js
index d5e32f8d..f5c44862 100644
--- a/lib/debug_command.js
+++ b/lib/debug_command.js
@@ -16,6 +16,7 @@ class DebugCommand extends Command {
 
     const options = {
       env: Object.assign({}, process.env),
+      execArgv: this.helper.formatExecArgv(args).concat([ '--inspect' ]),
     };
 
     options.env.NODE_ENV = options.env.NODE_ENV || 'development';
@@ -26,10 +27,6 @@ class DebugCommand extends Command {
     debug('%s %s, NODE_ENV:%s, cwd:%s',
       this.helper.serverBin, args.join(' '), options.env.NODE_ENV, process.cwd());
 
-    options.execArgv = [
-      '--inspect',
-    ];
-
     this.helper.forkNode(this.helper.serverBin, args, options);
   }
 
diff --git a/lib/dev_command.js b/lib/dev_command.js
index e6aede56..7046a76e 100644
--- a/lib/dev_command.js
+++ b/lib/dev_command.js
@@ -4,22 +4,20 @@ const debug = require('debug')('egg-bin:dev');
 const Command = require('./command');
 
 class DevCommand extends Command {
-  * run(cwd, args) {
-    const execArgv = args ? args.filter(str => str.indexOf('--debug') === 0 || str.indexOf('--inspect') === 0) : [];
-
+  * run(cwd, args = []) {
     const eggPath = this.getFrameworkOrEggPath(cwd);
-    args = yield this.helper.formatArgs(cwd, args, { eggPath });
+    const devArgs = yield this.helper.formatArgs(cwd, args, { eggPath });
 
     const options = {
       env: Object.assign({}, process.env),
-      execArgv,
+      execArgv: this.helper.formatExecArgv(args),
     };
 
     options.env.NODE_ENV = options.env.NODE_ENV || 'development';
 
-    debug('%s %j %j, %j', this.helper.serverBin, args, execArgv, options.env.NODE_ENV);
+    debug('%s %j %j, %j', this.helper.serverBin, devArgs, options.execArgv, options.env.NODE_ENV);
     yield this.helper.checkDeps();
-    yield this.helper.forkNode(this.helper.serverBin, args, options);
+    yield this.helper.forkNode(this.helper.serverBin, devArgs, options);
   }
 
   help() {
diff --git a/lib/helper.js b/lib/helper.js
index 965e1e55..e59e06b1 100644
--- a/lib/helper.js
+++ b/lib/helper.js
@@ -83,3 +83,16 @@ exports.formatArgs = function* (cwd, args, options) {
   }
   return args;
 };
+
+exports.formatExecArgv = function(args = []) {
+  return process.execArgv.concat(args.filter(passbyArgv));
+};
+
+function passbyArgv(arg) {
+  if (typeof arg !== 'string') return false;
+
+  return arg.startsWith('--debug')
+    || arg.startsWith('--inspect')
+    || arg.startsWith('--es_staging')
+    || arg.startsWith('--harmony');
+}
diff --git a/lib/test_command.js b/lib/test_command.js
index 89b226d7..b0b74d41 100644
--- a/lib/test_command.js
+++ b/lib/test_command.js
@@ -11,6 +11,7 @@ class TestCommand extends Command {
       env: Object.assign({}, process.env, {
         NODE_ENV: 'test',
       }),
+      execArgv: this.helper.formatExecArgv(args),
     };
     const mochaFile = require.resolve('mocha/bin/_mocha');
     yield this.helper.forkNode(mochaFile, newArgs, opt);
diff --git a/test/egg-debug.test.js b/test/egg-debug.test.js
index f778a542..3b946b8a 100644
--- a/test/egg-debug.test.js
+++ b/test/egg-debug.test.js
@@ -28,7 +28,7 @@ describe('egg-bin debug', () => {
   it('should startCluster with port', done => {
     coffee.fork(eggBin, [ 'debug', '--port', '6001' ], { cwd: appdir })
     // .debug()
-    .expect('stdout', `{"baseDir":"${appdir}","workers":1,"port":"6001","customEgg":"${customEgg}"}\n`)
+    .expect('stdout', `{"baseDir":"${appdir}","workers":1,"port":"6001","customEgg":"${customEgg}"}\nprocess.execArgv: [ '--inspect' ]\n`)
     .expect('code', 0)
     .end(done);
   });
diff --git a/test/egg-dev.test.js b/test/egg-dev.test.js
index 5535b7b2..f8e80c37 100644
--- a/test/egg-dev.test.js
+++ b/test/egg-dev.test.js
@@ -17,6 +17,14 @@ describe('egg-bin dev', () => {
     .end(done);
   });
 
+  it('should startCluster with --harmony success', done => {
+    coffee.fork(eggBin, [ 'dev', '--harmony' ], { cwd: appdir })
+    // .debug()
+    .expect('stdout', `{"baseDir":"${appdir}","workers":1,"customEgg":"${customEgg}"}\nprocess.execArgv: [ '--harmony' ]\n`)
+    .expect('code', 0)
+    .end(done);
+  });
+
   it('should startCluster with --port', done => {
     coffee.fork(eggBin, [ 'dev', '--port', '6001' ], { cwd: appdir })
     // .debug()
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 b42f805a..81de7666 100644
--- a/test/fixtures/demo-app/node_modules/aliyun-egg/index.js
+++ b/test/fixtures/demo-app/node_modules/aliyun-egg/index.js
@@ -2,4 +2,7 @@
 
 exports.startCluster = options => {
   console.log('%j', options);
+  if (process.execArgv.length) {
+    console.log('process.execArgv:', process.execArgv);
+  }
 };