diff --git a/.gitignore b/.gitignore
index f3d46ad..e941050 100644
--- a/.gitignore
+++ b/.gitignore
@@ -140,4 +140,5 @@ dmypy.json
 # Cython debug symbols
 cython_debug/
 
-.idea
\ No newline at end of file
+.idea
+migrations
\ No newline at end of file
diff --git a/alice/cli.py b/alice/cli.py
index 080cfc4..358ab6a 100644
--- a/alice/cli.py
+++ b/alice/cli.py
@@ -3,8 +3,13 @@ import os
 import sys
 from enum import Enum
 
-import click
-from click import BadParameter, ClickException
+import asyncclick as click
+from asyncclick import BadParameter, ClickException
+from tortoise import Tortoise, generate_schema_for_client
+
+from alice.backends.mysql import MysqlDDL
+from alice.migrate import Migrate
+from alice.utils import get_app_connection
 
 sys.path.append(os.getcwd())
 
@@ -15,15 +20,15 @@ class Color(str, Enum):
 
 
 @click.group(context_settings={'help_option_names': ['-h', '--help']})
-@click.option('-c', '--config', default='settings',
+@click.option('-c', '--config', default='settings', show_default=True,
               help='Tortoise-ORM config module, will read config variable from it, default is `settings`.')
-@click.option('-t', '--tortoise-orm', default='TORTOISE_ORM',
+@click.option('-t', '--tortoise-orm', default='TORTOISE_ORM', show_default=True,
               help='Tortoise-ORM config dict variable, default is `TORTOISE_ORM`.')
-@click.option('-l', '--location', default='./migrations',
+@click.option('-l', '--location', default='./migrations', show_default=True,
               help='Migrate store location, default is `./migrations`.')
-@click.option('--connection', default='default', help='Tortoise-ORM connection name, default is `default`.')
+@click.option('-a', '--app', default='models', show_default=True, help='Tortoise-ORM app name, default is `models`.')
 @click.pass_context
-def cli(ctx, config, tortoise_orm, location, connection):
+async def cli(ctx, config, tortoise_orm, location, app):
     ctx.ensure_object(dict)
     try:
         config_module = importlib.import_module(config)
@@ -31,10 +36,16 @@ def cli(ctx, config, tortoise_orm, location, connection):
         if not config:
             raise BadParameter(param_hint=['--config'],
                                message=f'Can\'t get "{tortoise_orm}" from module "{config_module}"')
+
+        await Tortoise.init(config=config)
+
         ctx.obj['config'] = config
         ctx.obj['location'] = location
-        if connection not in config.get('connections').keys():
-            raise BadParameter(param_hint=['--connection'], message=f'No connection found in "{config}"')
+        ctx.obj['app'] = app
+
+        if app not in config.get('apps').keys():
+            raise BadParameter(param_hint=['--app'], message=f'No app found in "{config}"')
+
     except ModuleNotFoundError:
         raise BadParameter(param_hint=['--tortoise-orm'], message=f'No module named "{config}"')
 
@@ -43,6 +54,17 @@ def cli(ctx, config, tortoise_orm, location, connection):
 @click.pass_context
 def migrate(ctx):
     config = ctx.obj['config']
+    location = ctx.obj['location']
+    app = ctx.obj['app']
+
+    old_models = Migrate.read_old_models(app, location)
+    print(old_models)
+
+    new_models = Tortoise.apps.get(app)
+    print(new_models)
+
+    ret = Migrate(MysqlDDL(get_app_connection(config, app))).diff_models(old_models, new_models)
+    print(ret)
 
 
 @cli.command()
@@ -58,26 +80,38 @@ def downgrade():
 
 
 @cli.command()
+@click.option('--safe', is_flag=True, default=True,
+              help='When set to true, creates the table only when it does not already exist..', show_default=True)
 @click.pass_context
-def initdb():
-    pass
+async def initdb(ctx, safe):
+    location = ctx.obj['location']
+    config = ctx.obj['config']
+    app = ctx.obj['app']
+
+    await generate_schema_for_client(get_app_connection(config, app), safe)
+
+    Migrate.write_old_models(app, location)
+
+    click.secho(f'Success initdb for app `{app}`', fg=Color.green)
 
 
 @cli.command()
-@click.option('--overwrite', type=bool, default=False, help='Overwrite old_models.py.')
+@click.option('--overwrite', is_flag=True, default=False, help=f'Overwrite {Migrate.old_models}.', show_default=True)
 @click.pass_context
 def init(ctx, overwrite):
     location = ctx.obj['location']
-    config = ctx.obj['config']
-    if not os.path.isdir(location) or overwrite:
+    app = ctx.obj['app']
+    if not os.path.isdir(location):
         os.mkdir(location)
-        connections = config.get('connections').keys()
-        for connection in connections:
-            dirname = os.path.join(location, connection)
-            if not os.path.isdir(dirname):
-                os.mkdir(dirname)
-                click.secho(f'Success create migrate location {dirname}', fg=Color.green)
-            if overwrite:
-                pass
+        dirname = os.path.join(location, app)
+        if not os.path.isdir(dirname):
+            os.mkdir(dirname)
+            click.secho(f'Success create migrate location {dirname}', fg=Color.green)
+    if overwrite:
+        Migrate.write_old_models(app, location)
     else:
         raise ClickException('Already inited')
+
+
+if __name__ == '__main__':
+    cli(_anyio_backend='asyncio')
diff --git a/alice/migrate.py b/alice/migrate.py
index c9b1330..d3c6df3 100644
--- a/alice/migrate.py
+++ b/alice/migrate.py
@@ -1,8 +1,12 @@
 import importlib
 import inspect
+import os
+from copy import deepcopy
+
+import dill
 from typing import List, Type, Dict
 
-from tortoise import Model, ForeignKeyFieldInstance
+from tortoise import Model, ForeignKeyFieldInstance, Tortoise
 from tortoise.fields import Field
 
 from alice.backends import DDL
@@ -11,11 +15,30 @@ from alice.backends import DDL
 class Migrate:
     operators: List
     ddl: DDL
+    old_models = 'old_models.pickle'
 
     def __init__(self, ddl: DDL):
         self.operators = []
         self.ddl = ddl
 
+    @staticmethod
+    def write_old_models(app, location):
+        ret = Tortoise.apps.get(app)
+        old_models = {}
+        for k, v in ret.items():
+            old_models[k] = deepcopy(v)
+
+        dirname = os.path.join(location, app)
+
+        with open(os.path.join(dirname, Migrate.old_models), 'wb') as f:
+            dill.dump(old_models, f, )
+
+    @staticmethod
+    def read_old_models(app, location):
+        dirname = os.path.join(location, app)
+        with open(os.path.join(dirname, Migrate.old_models), 'rb') as f:
+            return dill.load(f, )
+
     def diff_models_module(self, old_models_module, new_models_module):
         old_module = importlib.import_module(old_models_module)
         old_models = {}
diff --git a/alice/utils.py b/alice/utils.py
index e5b9908..9d5445a 100644
--- a/alice/utils.py
+++ b/alice/utils.py
@@ -1,17 +1,11 @@
-import re
+from tortoise import Tortoise
 
 
-def cp_models(old_model_file, new_model_file, new_app):
+def get_app_connection(config: dict, app: str):
     """
-    cp models file to old_models.py and rename model app
-    :param old_app:
-    :param new_app:
-    :param old_model_file:
-    :param new_model_file:
-    :return:r
+    get tortoise connection by app
+    :param config:
+    :param app:
+    :return:
     """
-    pattern = r'(ManyToManyField|ForeignKeyField|OneToOneField)\((model_name)?(\"|\')(?P<app>\w+).+\)'
-    with open(old_model_file, 'r') as f:
-        content = f.read()
-    ret = re.sub(pattern, rf'{new_app} \g<app>', content)
-    print(ret)
+    return Tortoise.get_connection(config.get('apps').get(app).get('default_connection')),
diff --git a/poetry.lock b/poetry.lock
index 8bce2a0..e8625aa 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -20,6 +20,47 @@ optional = false
 python-versions = ">=3.6"
 version = "0.13.0"
 
+[[package]]
+category = "main"
+description = "High level compatibility layer for multiple asynchronous event loop implementations"
+name = "anyio"
+optional = false
+python-versions = ">=3.5.3"
+version = "1.3.0"
+
+[package.dependencies]
+async-generator = "*"
+sniffio = ">=1.1"
+
+[package.extras]
+curio = ["curio (>=0.9)"]
+doc = ["sphinx-rtd-theme", "sphinx-autodoc-typehints (>=1.2.0)"]
+test = ["coverage (>=4.5)", "hypothesis (>=4.0)", "pytest (>=3.7.2)", "uvloop"]
+trio = ["trio (>=0.12)"]
+
+[[package]]
+category = "main"
+description = "Async generators and context managers for Python 3.5+"
+name = "async-generator"
+optional = false
+python-versions = ">=3.5"
+version = "1.10"
+
+[[package]]
+category = "main"
+description = "A simple anyio-compatible fork of Click, for powerful command line utilities."
+name = "asyncclick"
+optional = false
+python-versions = ">=3.6"
+version = "7.0.9"
+
+[package.dependencies]
+anyio = "*"
+
+[package.extras]
+dev = ["coverage", "pytest-runner", "pytest-trio", "pytest (>=3)", "sphinx", "tox"]
+docs = ["sphinx"]
+
 [[package]]
 category = "dev"
 description = "Enhance the standard unittest package with features for testing asyncio libraries"
@@ -48,14 +89,6 @@ optional = false
 python-versions = "*"
 version = "2.1.3"
 
-[[package]]
-category = "main"
-description = "Composable command line interface toolkit"
-name = "click"
-optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
-version = "7.1.2"
-
 [[package]]
 category = "main"
 description = "cryptography is a package which provides cryptographic recipes and primitives to Python developers."
@@ -75,6 +108,17 @@ idna = ["idna (>=2.1)"]
 pep8test = ["flake8", "flake8-import-order", "pep8-naming"]
 test = ["pytest (>=3.6.0,<3.9.0 || >3.9.0,<3.9.1 || >3.9.1,<3.9.2 || >3.9.2)", "pretend", "iso8601", "pytz", "hypothesis (>=1.11.4,<3.79.2 || >3.79.2)"]
 
+[[package]]
+category = "main"
+description = "serialize all of python"
+name = "dill"
+optional = false
+python-versions = ">=2.6, !=3.0.*"
+version = "0.3.1.1"
+
+[package.extras]
+graph = ["objgraph (>=1.7.2)"]
+
 [[package]]
 category = "dev"
 description = "the modular source code checker: pep8 pyflakes and co"
@@ -156,6 +200,14 @@ optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*"
 version = "1.14.0"
 
+[[package]]
+category = "main"
+description = "Sniff out which async library your code is running under"
+name = "sniffio"
+optional = false
+python-versions = ">=3.5"
+version = "1.1.0"
+
 [[package]]
 category = "dev"
 description = "tasks runner for python projects"
@@ -203,7 +255,7 @@ python-versions = "*"
 version = "3.7.4.2"
 
 [metadata]
-content-hash = "708876857d4653fd45cb251e9a1689c4158966f42da2efca1e8167becef89837"
+content-hash = "4809b238c12841eb28a6517843828716f207e9ed41b273bb681ae7a831e34af4"
 python-versions = "^3.8"
 
 [metadata.files]
@@ -215,6 +267,17 @@ aiosqlite = [
     {file = "aiosqlite-0.13.0-py3-none-any.whl", hash = "sha256:50688c40632ae249f986ab3ae2c66a45c0535b84a5d4aae0e0be572b5fed6909"},
     {file = "aiosqlite-0.13.0.tar.gz", hash = "sha256:6e92961ae9e606b43b05e29b129e346b29e400fcbd63e3c0c564d89230257645"},
 ]
+anyio = [
+    {file = "anyio-1.3.0-py3-none-any.whl", hash = "sha256:db2c3d21576870b95d4fd0b8f4a0f9c64057f777c578f3a8127179a17c8c067e"},
+    {file = "anyio-1.3.0.tar.gz", hash = "sha256:7deae0315dd10aa41c21528b83352e4b52f44e6153a21081a3d1cd8c03728e46"},
+]
+async-generator = [
+    {file = "async_generator-1.10-py3-none-any.whl", hash = "sha256:01c7bf666359b4967d2cda0000cc2e4af16a0ae098cbffcb8472fb9e8ad6585b"},
+    {file = "async_generator-1.10.tar.gz", hash = "sha256:6ebb3d106c12920aaae42ccb6f787ef5eefdcdd166ea3d628fa8476abe712144"},
+]
+asyncclick = [
+    {file = "asyncclick-7.0.9.tar.gz", hash = "sha256:62cebf3eca36d973802e2dd521ca1db11c5bf4544e9795e093d1a53cb688a8c2"},
+]
 asynctest = [
     {file = "asynctest-0.13.0-py3-none-any.whl", hash = "sha256:5da6118a7e6d6b54d83a8f7197769d046922a44d2a99c21382f0a6e4fadae676"},
     {file = "asynctest-0.13.0.tar.gz", hash = "sha256:c27862842d15d83e6a34eb0b2866c323880eb3a75e4485b079ea11748fd77fac"},
@@ -252,10 +315,6 @@ cffi = [
 ciso8601 = [
     {file = "ciso8601-2.1.3.tar.gz", hash = "sha256:bdbb5b366058b1c87735603b23060962c439ac9be66f1ae91e8c7dbd7d59e262"},
 ]
-click = [
-    {file = "click-7.1.2-py2.py3-none-any.whl", hash = "sha256:dacca89f4bfadd5de3d7489b7c8a566eee0d3676333fbb50030263894c38c0dc"},
-    {file = "click-7.1.2.tar.gz", hash = "sha256:d2b5255c7c6349bc1bd1e59e08cd12acbbd63ce649f2588755783aa94dfb6b1a"},
-]
 cryptography = [
     {file = "cryptography-2.9.2-cp27-cp27m-macosx_10_9_x86_64.whl", hash = "sha256:daf54a4b07d67ad437ff239c8a4080cfd1cc7213df57d33c97de7b4738048d5e"},
     {file = "cryptography-2.9.2-cp27-cp27m-manylinux1_x86_64.whl", hash = "sha256:3b3eba865ea2754738616f87292b7f29448aec342a7c720956f8083d252bf28b"},
@@ -277,6 +336,9 @@ cryptography = [
     {file = "cryptography-2.9.2-cp38-cp38-win_amd64.whl", hash = "sha256:1dfa985f62b137909496e7fc182dac687206d8d089dd03eaeb28ae16eec8e7d5"},
     {file = "cryptography-2.9.2.tar.gz", hash = "sha256:a0c30272fb4ddda5f5ffc1089d7405b7a71b0b0f51993cb4e5dbb4590b2fc229"},
 ]
+dill = [
+    {file = "dill-0.3.1.1.tar.gz", hash = "sha256:42d8ef819367516592a825746a18073ced42ca169ab1f5f4044134703e7a049c"},
+]
 flake8 = [
     {file = "flake8-3.8.1-py2.py3-none-any.whl", hash = "sha256:6c1193b0c3f853ef763969238f6c81e9e63ace9d024518edc020d5f1d6d93195"},
     {file = "flake8-3.8.1.tar.gz", hash = "sha256:ea6623797bf9a52f4c9577d780da0bb17d65f870213f7b5bcc9fca82540c31d5"},
@@ -313,6 +375,10 @@ six = [
     {file = "six-1.14.0-py2.py3-none-any.whl", hash = "sha256:8f3cd2e254d8f793e7f3d6d9df77b92252b52637291d0f0da013c76ea2724b6c"},
     {file = "six-1.14.0.tar.gz", hash = "sha256:236bdbdce46e6e6a3d61a337c0f8b763ca1e8717c03b369e87a7ec7ce1319c0a"},
 ]
+sniffio = [
+    {file = "sniffio-1.1.0-py3-none-any.whl", hash = "sha256:20ed6d5b46f8ae136d00b9dcb807615d83ed82ceea6b2058cecb696765246da5"},
+    {file = "sniffio-1.1.0.tar.gz", hash = "sha256:8e3810100f69fe0edd463d02ad407112542a11ffdc29f67db2bf3771afb87a21"},
+]
 taskipy = [
     {file = "taskipy-1.2.1-py3-none-any.whl", hash = "sha256:99bdaf5b19791c2345806847147e0fc2d28e1ac9446058def5a8b6b3fc9f23e2"},
     {file = "taskipy-1.2.1.tar.gz", hash = "sha256:5eb2c3b1606c896c7fa799848e71e8883b880759224958d07ba760e5db263175"},
diff --git a/pyproject.toml b/pyproject.toml
index de85af0..f4c81f3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,7 +8,8 @@ authors = ["long2ice <long2ice@gmail.com>"]
 python = "^3.8"
 tortoise-orm = {git = "https://github.com/tortoise/tortoise-orm.git", branch = "develop"}
 aiomysql = "*"
-click = "*"
+asyncclick = "*"
+dill = "*"
 
 [tool.poetry.dev-dependencies]
 taskipy = "*"
diff --git a/requirements.txt b/requirements.txt
index 9f16636..5fecaeb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,13 +1,17 @@
 aiomysql==0.0.20
 aiosqlite==0.13.0
+anyio==1.3.0
+async-generator==1.10
+asyncclick==7.0.9
 cffi==1.14.0
 ciso8601==2.1.3; sys_platform != "win32" and implementation_name == "cpython"
-click==7.1.2
 cryptography==2.9.2
+dill==0.3.1.1
 iso8601==0.1.12; sys_platform == "win32" or implementation_name != "cpython"
 pycparser==2.20
 pymysql==0.9.2
 pypika==0.37.6
 six==1.14.0
-tortoise-orm==0.16.10
+sniffio==1.1.0
+-e git+https://github.com/tortoise/tortoise-orm.git@72f84f0848dc68041157f03e60cd1c92b0ee5137#egg=tortoise-orm
 typing-extensions==3.7.4.2
diff --git a/tests/new_models.py b/tests/new_models.py
deleted file mode 100644
index afcb683..0000000
--- a/tests/new_models.py
+++ /dev/null
@@ -1,69 +0,0 @@
-import datetime
-from enum import IntEnum
-from tortoise import fields, Model
-
-
-class ProductType(IntEnum):
-    article = 1
-    page = 2
-
-
-class PermissionAction(IntEnum):
-    create = 1
-    delete = 2
-    update = 3
-    read = 4
-
-
-class Status(IntEnum):
-    on = 1
-    off = 0
-
-
-class User(Model):
-    username = fields.CharField(max_length=20, unique=True)
-    password = fields.CharField(max_length=200)
-    last_login = fields.DatetimeField(description='Last Login', default=datetime.datetime.now)
-    is_active = fields.BooleanField(default=True, description='Is Active')
-    is_superuser = fields.BooleanField(default=False, description='Is SuperUser')
-    avatar = fields.CharField(max_length=200, default='')
-    intro = fields.TextField(default='')
-
-
-    def __str__(self):
-        return f'{self.pk}#{self.username}'
-
-
-class Category(Model):
-    slug = fields.CharField(max_length=200)
-    name = fields.CharField(max_length=200)
-    user = fields.ForeignKeyField('new_models.User', description='User')
-    created_at = fields.DatetimeField(auto_now_add=True)
-
-    def __str__(self):
-        return f'{self.pk}#{self.name}'
-
-
-class Product(Model):
-    categories = fields.ManyToManyField('new_models.Category')
-    name = fields.CharField(max_length=50)
-    view_num = fields.IntField(description='View Num')
-    sort = fields.IntField()
-    is_reviewed = fields.BooleanField(description='Is Reviewed')
-    type = fields.IntEnumField(ProductType, description='Product Type')
-    image = fields.CharField(max_length=200)
-    body = fields.TextField()
-    created_at = fields.DatetimeField(auto_now_add=True)
-
-    def __str__(self):
-        return f'{self.pk}#{self.name}'
-
-
-class Config(Model):
-    label = fields.CharField(max_length=200)
-    key = fields.CharField(max_length=20)
-    value = fields.JSONField()
-    status: Status = fields.IntEnumField(Status, default=Status.on)
-
-    def __str__(self):
-        return f'{self.pk}#{self.label}'
diff --git a/tests/test_utils.py b/tests/test_utils.py
new file mode 100644
index 0000000..e7b95cd
--- /dev/null
+++ b/tests/test_utils.py
@@ -0,0 +1,9 @@
+from unittest import TestCase
+
+from alice.utils import cp_models
+
+
+class TestUtils(TestCase):
+    def test_cp_models(self):
+        ret = cp_models('models.py', 'new_models.py', 'new_models')
+        print(ret)