diff --git a/uncloud/cli/commands/helper.py b/uncloud/cli/commands/helper.py
deleted file mode 100755
index 6bef690..0000000
--- a/uncloud/cli/commands/helper.py
+++ /dev/null
@@ -1,62 +0,0 @@
-import json
-import binascii
-import click
-import requests
-
-from os.path import join as join_path
-
-from pyotp import TOTP
-from uncloud.settings import settings
-
-
-def load_dump_pretty(content):
-    if isinstance(content, bytes):
-        content = content.decode('utf-8')
-    parsed = json.loads(content)
-    return json.dumps(parsed, indent=4, sort_keys=True)
-
-
-def make_request(*args, data=None, request_method=requests.post):
-    r = request_method(
-        join_path(settings['client']['api_server'], *args), json=data
-    )
-    try:
-        print(load_dump_pretty(r.content))
-    except Exception:
-        print('Error occurred while getting output from api server.')
-
-
-def get_token(_, param, value):
-    if value is not None:
-        try:
-            token = TOTP(value).now()
-        except binascii.Error:
-            raise click.BadParameter('')
-        else:
-            param.name = 'token'
-            return token
-
-
-def add_otp_options(f):
-    options = [
-        click.option('--name', show_default='name mentioned in config file.', prompt=True),
-        click.option('--realm', show_default='realm mentioned in config file.', prompt=True),
-        click.option('--seed', callback=get_token, show_default='seed mentioned in config file',
-                     prompt=True)
-    ]
-
-    for opt in reversed(options):
-        f = opt(f)
-
-    return f
-
-
-def add_vm_options(f):
-    options = [
-        click.option('--vm-name', required=True),
-        click.option('--action', required=True, default=f.__name__)
-    ]
-    for opt in reversed(options):
-        f = opt(f)
-
-    return f
diff --git a/uncloud/cli/commands/host.py b/uncloud/cli/commands/host.py
deleted file mode 100755
index 29ee417..0000000
--- a/uncloud/cli/commands/host.py
+++ /dev/null
@@ -1,31 +0,0 @@
-import click
-import requests
-
-from .helper import add_otp_options, make_request
-
-
-@click.group()
-def host():
-    pass
-
-
-@host.command('create')
-@add_otp_options
-@click.option('--hostname', required=True)
-@click.option('--cpu', required=True, type=int)
-@click.option('--ram', required=True)
-@click.option('--os-ssd', required=True)
-@click.option('--hdd', default=list(), multiple=True)
-def create(**kwargs):
-    kwargs['specs'] = {
-        'cpu': kwargs.pop('cpu'),
-        'ram': kwargs.pop('ram'),
-        'os-ssd': kwargs.pop('os_ssd'),
-        'hdd': kwargs.pop('hdd')
-    }
-    make_request('host', 'create', data=kwargs)
-
-
-@host.command('list')
-def list_host():
-    make_request('host', 'list', request_method=requests.get)
diff --git a/uncloud/cli/commands/image.py b/uncloud/cli/commands/image.py
deleted file mode 100755
index 6f9fe86..0000000
--- a/uncloud/cli/commands/image.py
+++ /dev/null
@@ -1,24 +0,0 @@
-import click
-import requests
-
-from .helper import make_request
-
-
-@click.group()
-def image():
-    pass
-
-
-@image.command('list')
-@click.option('--public', is_flag=True)
-def _list(public):
-    if public:
-        make_request('image', 'list-public', request_method=requests.get)
-
-
-@image.command('create-from-file')
-@click.option('--name', required=True)
-@click.option('--uuid', required=True)
-@click.option('--image-store-name', 'image_store', required=True)
-def create_from_file(**kwargs):
-    make_request('image', 'create', data=kwargs)
diff --git a/uncloud/cli/commands/network.py b/uncloud/cli/commands/network.py
deleted file mode 100644
index 81e22d5..0000000
--- a/uncloud/cli/commands/network.py
+++ /dev/null
@@ -1,17 +0,0 @@
-import click
-
-from .helper import add_otp_options, make_request
-
-
-@click.group()
-def network():
-    pass
-
-
-@network.command('create')
-@add_otp_options
-@click.option('--network-name', required=True)
-@click.option('--network-type', 'type', required=True)
-@click.option('--user', required=True, type=bool, default=False)
-def create(**kwargs):
-    make_request('network', 'create', data=kwargs)
diff --git a/uncloud/cli/commands/user.py b/uncloud/cli/commands/user.py
deleted file mode 100755
index 2116520..0000000
--- a/uncloud/cli/commands/user.py
+++ /dev/null
@@ -1,48 +0,0 @@
-import click
-
-from .helper import add_otp_options, make_request
-
-
-@click.group()
-def user():
-    pass
-
-
-@user.command('files')
-@add_otp_options
-def list_files(**kwargs):
-    make_request('user', 'files', data=kwargs)
-
-
-@user.command('vms')
-@add_otp_options
-def list_vms(**kwargs):
-    make_request('user', 'vms', data=kwargs)
-
-
-@user.command('networks')
-@add_otp_options
-def list_networks(**kwargs):
-    make_request('user', 'network', data=kwargs)
-
-
-@user.command('add-ssh')
-@add_otp_options
-@click.option('--key-name', required=True)
-@click.option('--key', required=True)
-def add_ssh(**kwargs):
-    make_request('user', 'add-ssh', data=kwargs)
-
-
-@user.command('remove-ssh')
-@add_otp_options
-@click.option('--key-name', required=True)
-def remove_ssh(**kwargs):
-    make_request('user', 'remove-ssh', data=kwargs)
-
-
-@user.command('get-ssh')
-@add_otp_options
-@click.option('--key-name', default='')
-def get_ssh(**kwargs):
-    make_request('user', 'get-ssh', data=kwargs)
diff --git a/uncloud/cli/commands/vm.py b/uncloud/cli/commands/vm.py
deleted file mode 100755
index 8527ac2..0000000
--- a/uncloud/cli/commands/vm.py
+++ /dev/null
@@ -1,63 +0,0 @@
-import click
-
-from .helper import add_otp_options, make_request, add_vm_options
-
-
-@click.group()
-def vm():
-    pass
-
-
-@vm.command('create')
-@add_otp_options
-@add_vm_options
-@click.option('--cpu', required=True, type=int)
-@click.option('--ram', required=True)
-@click.option('--os-ssd', required=True)
-@click.option('--hdd', default=list(), multiple=True)
-@click.option('--image', required=True)
-@click.option('--network', default=list(), multiple=True)
-def create(**kwargs):
-    kwargs['specs'] = {
-        'cpu': kwargs.pop('cpu'),
-        'ram': kwargs.pop('ram'),
-        'os-ssd': kwargs.pop('os_ssd'),
-        'hdd': kwargs.pop('hdd')
-    }
-    make_request('vm', kwargs.pop('action'), data=kwargs)
-
-
-@vm.command('start')
-@add_otp_options
-@add_vm_options
-def start(**kwargs):
-    make_request('vm', 'action', data=kwargs)
-
-
-@vm.command('stop')
-@add_otp_options
-@add_vm_options
-def stop(**kwargs):
-    make_request('vm', 'action', data=kwargs)
-
-
-@vm.command('delete')
-@add_otp_options
-@add_vm_options
-def delete(**kwargs):
-    make_request('vm', 'action', data=kwargs)
-
-
-@vm.command('status')
-@add_otp_options
-@click.option('--vm-name', required=True)
-def status(**kwargs):
-    make_request('vm', 'status', data=kwargs)
-
-
-@vm.command('migrate')
-@add_otp_options
-@click.option('--vm-name', required=True)
-@click.option('--destination', required=True)
-def vm_migration(**kwargs):
-    make_request('vm', 'migrate', data=kwargs)
diff --git a/uncloud/cli/helper.py b/uncloud/cli/helper.py
new file mode 100644
index 0000000..bdcce78
--- /dev/null
+++ b/uncloud/cli/helper.py
@@ -0,0 +1,42 @@
+import requests
+import json
+import argparse
+import binascii
+
+from pyotp import TOTP
+from os.path import join as join_path
+from uncloud.settings import settings
+
+
+def get_otp_parser():
+    otp_parser = argparse.ArgumentParser('otp')
+    otp_parser.add_argument('--name', default=settings['client']['name'])
+    otp_parser.add_argument('--realm', default=settings['client']['realm'])
+    otp_parser.add_argument('--seed', type=get_token, default=settings['client']['seed'],
+                            dest='token', metavar='SEED')
+    return otp_parser
+
+
+def load_dump_pretty(content):
+    if isinstance(content, bytes):
+        content = content.decode('utf-8')
+    parsed = json.loads(content)
+    return json.dumps(parsed, indent=4, sort_keys=True)
+
+
+def make_request(*args, data=None, request_method=requests.post):
+    r = request_method(join_path(settings['client']['api_server'], *args), json=data)
+    try:
+        print(load_dump_pretty(r.content))
+    except Exception:
+        print('Error occurred while getting output from api server.')
+
+
+def get_token(seed):
+    if seed is not None:
+        try:
+            token = TOTP(seed).now()
+        except binascii.Error:
+            raise argparse.ArgumentTypeError('Invalid seed')
+        else:
+            return token
diff --git a/uncloud/cli/host.py b/uncloud/cli/host.py
new file mode 100644
index 0000000..e912567
--- /dev/null
+++ b/uncloud/cli/host.py
@@ -0,0 +1,45 @@
+import requests
+
+from uncloud.cli.helper import make_request, get_otp_parser
+from uncloud.common.parser import BaseParser
+
+
+class HostParser(BaseParser):
+    def __init__(self):
+        super().__init__('host')
+
+    def create(self, **kwargs):
+        p = self.subparser.add_parser('create', parents=[get_otp_parser()], **kwargs)
+        p.add_argument('--hostname', required=True)
+        p.add_argument('--cpu', required=True, type=int)
+        p.add_argument('--ram', required=True)
+        p.add_argument('--os-ssd', required=True)
+        p.add_argument('--hdd', default=list())
+
+    def list(self, **kwargs):
+        self.subparser.add_parser('list', **kwargs)
+
+
+parser = HostParser()
+arg_parser = parser.arg_parser
+
+
+def main(**kwargs):
+    subcommand = kwargs.pop('host_subcommand')
+    if not subcommand:
+        arg_parser.print_help()
+    else:
+        request_method = requests.post
+        data = None
+        if subcommand == 'create':
+            kwargs['specs'] = {
+                'cpu': kwargs.pop('cpu'),
+                'ram': kwargs.pop('ram'),
+                'os-ssd': kwargs.pop('os_ssd'),
+                'hdd': kwargs.pop('hdd')
+            }
+            data = kwargs
+        elif subcommand == 'list':
+            request_method = requests.get
+
+        make_request('host', subcommand, data=data, request_method=request_method)
diff --git a/uncloud/cli/image.py b/uncloud/cli/image.py
new file mode 100644
index 0000000..3db9577
--- /dev/null
+++ b/uncloud/cli/image.py
@@ -0,0 +1,38 @@
+import requests
+
+from uncloud.cli.helper import make_request
+from uncloud.common.parser import BaseParser
+
+
+class ImageParser(BaseParser):
+    def __init__(self):
+        super().__init__('image')
+
+    def create(self, **kwargs):
+        p = self.subparser.add_parser('create', **kwargs)
+        p.add_argument('--name', required=True)
+        p.add_argument('--uuid', required=True)
+        p.add_argument('--image-store-name', default='image_store')
+
+    def list(self, **kwargs):
+        self.subparser.add_parser('list', add_help=False, **kwargs)
+
+
+parser = ImageParser()
+arg_parser = parser.arg_parser
+
+
+def main(**kwargs):
+    subcommand = kwargs.pop('image_subcommand')
+    if not subcommand:
+        arg_parser.print_help()
+    else:
+        data = None
+        request_method = requests.post
+        if subcommand == 'list':
+            subcommand = 'list-public'
+            request_method = requests.get
+        elif subcommand == 'create':
+            data = kwargs
+
+        make_request('image', subcommand, data=data, request_method=request_method)
diff --git a/uncloud/cli/main.py b/uncloud/cli/main.py
index 7d625c4..7f5e367 100644
--- a/uncloud/cli/main.py
+++ b/uncloud/cli/main.py
@@ -1,24 +1,23 @@
 #!/usr/bin/env python3
 
-import click
+import argparse
+import importlib
 
-from uncloud.cli.commands.vm import vm
-from uncloud.cli.commands.user import user
-from uncloud.cli.commands.host import host
-from uncloud.cli.commands.image import image
-from uncloud.cli.commands.network import network
+arg_parser = argparse.ArgumentParser('cli', add_help=False)
+subparser = arg_parser.add_subparsers(dest='subcommand')
+
+for component in ['user', 'host', 'image', 'network', 'vm']:
+    module = importlib.import_module('uncloud.cli.{}'.format(component))
+    parser = getattr(module, 'arg_parser')
+    subparser.add_parser(name=parser.prog, parents=[parser])
 
 
-@click.group()
-def cli():
-    pass
-
-
-cli.add_command(vm)
-cli.add_command(user)
-cli.add_command(image)
-cli.add_command(host)
-cli.add_command(network)
-
-if __name__ == '__main__':
-    cli()
+def main(**kwargs):
+    if not kwargs['subcommand']:
+        arg_parser.print_help()
+    else:
+        name = kwargs.pop('subcommand')
+        kwargs.pop('debug')
+        mod = importlib.import_module('uncloud.cli.{}'.format(name))
+        _main = getattr(mod, 'main')
+        _main(**kwargs)
diff --git a/uncloud/cli/network.py b/uncloud/cli/network.py
new file mode 100644
index 0000000..33e41a9
--- /dev/null
+++ b/uncloud/cli/network.py
@@ -0,0 +1,32 @@
+import requests
+
+from uncloud.cli.helper import make_request, get_otp_parser
+from uncloud.common.parser import BaseParser
+
+
+class NetworkParser(BaseParser):
+    def __init__(self):
+        super().__init__('network')
+
+    def create(self, **kwargs):
+        p = self.subparser.add_parser('create', add_help=False, parents=[get_otp_parser()], **kwargs)
+        p.add_argument('--network-name', required=True)
+        p.add_argument('--network-type', required=True, dest='type')
+        p.add_argument('--user', action='store_true')
+
+
+parser = NetworkParser()
+arg_parser = parser.arg_parser
+
+
+def main(**kwargs):
+    subcommand = kwargs.pop('network_subcommand')
+    if not subcommand:
+        arg_parser.print_help()
+    else:
+        data = None
+        request_method = requests.post
+        if subcommand == 'create':
+            data = kwargs
+
+        make_request('network', subcommand, data=data, request_method=request_method)
diff --git a/uncloud/cli/user.py b/uncloud/cli/user.py
new file mode 100755
index 0000000..3a4cc4e
--- /dev/null
+++ b/uncloud/cli/user.py
@@ -0,0 +1,41 @@
+from uncloud.cli.helper import make_request, get_otp_parser
+from uncloud.common.parser import BaseParser
+
+
+class UserParser(BaseParser):
+    def __init__(self):
+        super().__init__('user')
+
+    def files(self, **kwargs):
+        self.subparser.add_parser('files', parents=[get_otp_parser()], **kwargs)
+
+    def vms(self, **kwargs):
+        self.subparser.add_parser('vms', parents=[get_otp_parser()], **kwargs)
+
+    def networks(self, **kwargs):
+        self.subparser.add_parser('networks', parents=[get_otp_parser()], **kwargs)
+
+    def add_ssh(self, **kwargs):
+        p = self.subparser.add_parser('add-ssh', parents=[get_otp_parser()], **kwargs)
+        p.add_argument('--key-name', required=True)
+        p.add_argument('--key', required=True)
+
+    def get_ssh(self, **kwargs):
+        p = self.subparser.add_parser('get-ssh', parents=[get_otp_parser()], **kwargs)
+        p.add_argument('--key-name', default='')
+
+    def remove_ssh(self, **kwargs):
+        p = self.subparser.add_parser('remove-ssh', parents=[get_otp_parser()], **kwargs)
+        p.add_argument('--key-name', required=True)
+
+
+parser = UserParser()
+arg_parser = parser.arg_parser
+
+
+def main(**kwargs):
+    subcommand = kwargs.pop('user_subcommand')
+    if not subcommand:
+        arg_parser.print_help()
+    else:
+        make_request('user', subcommand, data=kwargs)
diff --git a/uncloud/cli/vm.py b/uncloud/cli/vm.py
new file mode 100644
index 0000000..396530e
--- /dev/null
+++ b/uncloud/cli/vm.py
@@ -0,0 +1,62 @@
+from uncloud.common.parser import BaseParser
+from uncloud.cli.helper import make_request, get_otp_parser
+
+
+class VMParser(BaseParser):
+    def __init__(self):
+        super().__init__('vm')
+
+    def start(self, **args):
+        p = self.subparser.add_parser('start', parents=[get_otp_parser()], **args)
+        p.add_argument('--vm-name', required=True)
+
+    def stop(self, **args):
+        p = self.subparser.add_parser('stop', parents=[get_otp_parser()], **args)
+        p.add_argument('--vm-name', required=True)
+
+    def status(self, **args):
+        p = self.subparser.add_parser('status', parents=[get_otp_parser()], **args)
+        p.add_argument('--vm-name', required=True)
+
+    def delete(self, **args):
+        p = self.subparser.add_parser('delete', parents=[get_otp_parser()], **args)
+        p.add_argument('--vm-name', required=True)
+
+    def migrate(self, **args):
+        p = self.subparser.add_parser('migrate', parents=[get_otp_parser()], **args)
+        p.add_argument('--vm-name', required=True)
+        p.add_argument('--destination', required=True)
+
+    def create(self, **args):
+        p = self.subparser.add_parser('create', parents=[get_otp_parser()], **args)
+        p.add_argument('--cpu', required=True)
+        p.add_argument('--ram', required=True)
+        p.add_argument('--os-ssd', required=True)
+        p.add_argument('--hdd', action='append', default=list())
+        p.add_argument('--image', required=True)
+        p.add_argument('--network', action='append', default=[])
+        p.add_argument('--vm-name', required=True)
+
+
+parser = VMParser()
+arg_parser = parser.arg_parser
+
+
+def main(**kwargs):
+    subcommand = kwargs.pop('vm_subcommand')
+    if not subcommand:
+        arg_parser.print_help()
+    else:
+        data = kwargs
+        endpoint = subcommand
+        if subcommand in ['start', 'stop', 'delete']:
+            endpoint = 'action'
+            data['action'] = subcommand
+        elif subcommand == 'create':
+            kwargs['specs'] = {
+                'cpu': kwargs.pop('cpu'),
+                'ram': kwargs.pop('ram'),
+                'os-ssd': kwargs.pop('os_ssd'),
+                'hdd': kwargs.pop('hdd')
+            }
+        make_request('vm', endpoint, data=data)
diff --git a/uncloud/cli/commands/__init__.py b/uncloud/common/parser.py
old mode 100755
new mode 100644
similarity index 100%
rename from uncloud/cli/commands/__init__.py
rename to uncloud/common/parser.py