diff --git a/accounts.json b/accounts.json
new file mode 100644
index 0000000..0967ef4
--- /dev/null
+++ b/accounts.json
@@ -0,0 +1 @@
+{}
diff --git a/commands.py b/commands.py
deleted file mode 100644
index 0425fa0..0000000
--- a/commands.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from discord.ext import commands
-
-@commands.command()
-async def ping(ctx: commands.Context, msg: str):
-    msg = f'{ctx.author} send message in {ctx.channel}: {ctx.command} {ctx.args}'
-    print(msg)
-    await ctx.send(msg)
diff --git a/main.py b/main.py
index 138c184..3e2ac58 100644
--- a/main.py
+++ b/main.py
@@ -1,12 +1,20 @@
 import discord
-from commands import *
 from discord.ext import commands
 import os
+from src.cml_account import CMLAccountManager
+import json
 
 DISCORD_API_KEY = os.environ['DISCORD_API_KEY']
+DB_USERNAME = 'web'
+DB_PASSWORD = os.environ['DISCORD_BOT_DB_PASSWORD']
 
-intents = discord.Intents.all()
-client = commands.Bot(command_prefix='/', intents=intents)
+cml_manager = CMLAccountManager(DB_USERNAME, DB_PASSWORD)
 
-client.add_command(ping)
-client.run(DISCORD_API_KEY)
+if __name__ == '__main__':
+    intents = discord.Intents.all()
+    client = commands.Bot(command_prefix='/', intents=intents)
+
+    from src.commands import ping, bind
+    client.add_command(ping)
+    client.add_command(bind)
+    client.run(DISCORD_API_KEY)
diff --git a/src/cml_account.py b/src/cml_account.py
new file mode 100644
index 0000000..c053c14
--- /dev/null
+++ b/src/cml_account.py
@@ -0,0 +1,28 @@
+import mysql.connector
+import os
+
+class CMLAccountManager():
+    def __init__(self, db_username, db_password) -> None:
+        config = {
+            'user': db_username,
+            'password': db_password,
+            'host': 'cml4.csie.ntu.edu.tw',  # 默認是 'localhost'
+            'database': 'CMLabWebSite',
+            'raise_on_warnings': True,
+            'ssl_disabled': True
+        }
+
+        self.conn = mysql.connector.connect(**config)
+        print("Connection successful")
+
+    def find_user(self, username):
+        cursor = self.conn.cursor()
+        query = "SELECT * FROM `People` WHERE `account`=%s"
+        param = (username, )
+
+        cursor.execute(query, param)
+        result = cursor.fetchone()
+
+        cursor.close()
+
+        return result
diff --git a/src/commands.py b/src/commands.py
new file mode 100644
index 0000000..a8b36f0
--- /dev/null
+++ b/src/commands.py
@@ -0,0 +1,91 @@
+from discord.ext import commands
+from discord.utils import get
+from main import cml_manager
+from src.message import *
+from src.dc_manage import *
+import json
+
+@commands.command()
+async def ping(ctx: commands.Context, msg: str):
+    msg = f'{ctx.author} send message in {ctx.channel}: {ctx.command} {ctx.args}'
+    print(msg)
+    await ctx.send(msg)
+
+@commands.command()
+async def bind(ctx: commands.Context, username: str):
+    with open('accounts.json') as fp:
+        accounts = json.load(fp)
+
+    if username in accounts:
+        await ctx.send(BIND_BINDED.format(ctx.author.display_name, username))
+        return
+
+    # find user from CML database
+    user = cml_manager.find_user(username)
+    print(user)
+
+    if user == None:
+        await ctx.send(BIND_CANNOT_FIND_ACCOUNT.format(ctx.author.display_name, username))
+        return
+
+    # get user information
+    group = user[2].upper()
+    teacher = user[3]
+    first_name = user[8]
+    last_name = user[7]
+
+    # 確認 dc 名稱是不是正確
+    # 並且確認 CML 登陸的姓名是否跟 dc 一致
+    full_name = last_name + first_name
+    if f'-{full_name}' not in ctx.author.display_name:
+        await ctx.send(BIND_DIFFERENT_NAME.format(ctx.author.display_name, username))
+        return
+        
+    uid = ctx.author.id
+
+    accounts[username] = {
+        'name': ctx.author.display_name,
+        'uid': uid
+    }
+    with open('accounts.json', 'w') as fp:
+        json.dump(accounts, fp, ensure_ascii=False)
+
+    '''
+    user = ctx.guild.get_member(uid)
+    await user.send("Hello, this is CML bot")
+    '''
+
+    # dc 分組
+    # 給 dc 身份組別
+    dc_group = None
+    if group == 'MIRA':
+        dc_group = 'R 組'
+    elif group == 'DSP':
+        dc_group = 'DSP 組'
+    elif group == 'GRAPHICS':
+        dc_group = 'G 組'
+    elif group == 'NETWORK':
+        dc_group = 'N 組'
+    elif group == 'AIMM':
+        dc_group = 'A 組'
+    elif group == 'SYSTEM':
+        dc_group = 'SYSTEM 組'
+
+
+    if dc_group != None:
+        # build group & add the user to the group
+        guild = ctx.guild
+        if not get(guild.roles, name=dc_group):
+            await create_group(guild, dc_group)
+
+        target_role = get(guild.roles, name=dc_group)
+        await ctx.author.add_roles(target_role)
+        msg = BIND_SUCCESS.format(first_name, group, dc_group, username)
+    else:
+        msg = BIND_GROUP_ERROR.format(first_name)
+
+    await ctx.send(msg)
+
+
+    
+
diff --git a/src/dc_manage.py b/src/dc_manage.py
new file mode 100644
index 0000000..b520c86
--- /dev/null
+++ b/src/dc_manage.py
@@ -0,0 +1,39 @@
+import discord
+
+async def create_group(guild: discord.Guild, name: str):
+    permissions = discord.Permissions.text()
+    permissions.add_reactions = True
+    permissions.stream = True
+    permissions.read_messages = True
+    permissions.send_messages = True
+    permissions.send_tts_messages = True
+    permissions.embed_links = True
+    permissions.attach_files = True
+    permissions.read_message_history = True
+    permissions.manage_messages = False
+    permissions.mention_everyone = True
+    permissions.external_emojis = True
+    permissions.connect = True
+    permissions.speak = True
+    permissions.use_voice_activation = True
+    permissions.change_nickname = True
+    permissions.manage_expressions = True
+    permissions.manage_emojis_and_stickers = True
+    permissions.use_application_commands = True
+    permissions.send_messages_in_threads = True
+    permissions.use_soundboard = True
+    permissions.send_voice_messages = True
+    permissions.send_polls = True
+    permissions.create_private_threads = False
+    permissions.create_public_threads = False
+    permissions.manage_threads = False
+    permissions.use_external_apps = True
+    permissions.create_instant_invite = True
+
+
+    await guild.create_role(
+        name=name,
+        hoist=True,
+        mentionable=True,
+        permissions=permissions
+    )
diff --git a/src/message.py b/src/message.py
new file mode 100644
index 0000000..8a1bc85
--- /dev/null
+++ b/src/message.py
@@ -0,0 +1,42 @@
+BIND_CANNOT_FIND_ACCOUNT = '''
+Hi {},
+
+我們無法在 CMLab 資料庫找到您輸入的帳號 (`{}`)
+
+'''
+
+BIND_DIFFERENT_NAME = '''
+Hi {},
+
+您似乎還沒有按照群組規則命名您的 Discord 名稱
+    or
+資料庫紀錄 {} 的姓名與您目前的 Discord 並不相同:
+
+    > [學號前三碼]-[姓名]， 例如: R13-王小明
+
+如果修改過後仍然存在問題請找網管。
+您可以透過 DC 聯絡網管或 mail 到 unix_manager@cmlab.csie.ntu.edu.tw
+
+'''
+
+BIND_SUCCESS = '''
+Hi {},
+
+我們從資料庫找到您屬於 `{} group`, 我們已經幫您分配到 Discord `{}` 的身份！
+並且已經綁定您的 CMLab 使用者帳號 `{}`，未來若有實驗室相關通知我們能夠快速找到您！
+
+'''
+
+BIND_GROUP_ERROR = '''
+Hi {},
+
+我們在幫您分組時出現了一點錯誤，請聯絡網管！
+您可以透過 DC 聯絡網管或 mail 到 unix_manager@cmlab.csie.ntu.edu.tw
+
+'''
+BIND_BINDED = '''
+Hi {},
+
+這個使用者帳號 `{}` 已經綁定過 Discord 帳號！
+您可以透過 DC 聯絡網管或 mail 到 unix_manager@cmlab.csie.ntu.edu.tw
+'''