diff --git a/kds/database.py b/kds/database.py
new file mode 100644
index 0000000..44f290e
--- /dev/null
+++ b/kds/database.py
@@ -0,0 +1,9 @@
+# Sqlalchemy Import
+from sqlalchemy import create_engine, Column, Integer, String
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+
+# Sqlalchemy 创建数据库连接
+engine = create_engine("sqlite:///../kds.db", connect_args={"check_same_thread": False})
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+Base = declarative_base()
diff --git a/kds/main.py b/kds/main.py
index e91acb3..377bed6 100644
--- a/kds/main.py
+++ b/kds/main.py
@@ -1,7 +1,10 @@
+# Fastapi Import
 from typing import Union
 from fastapi import FastAPI
-from .routers import callback, root
+from kds.routers import callback, root
 
+
+# Fastapi 创建各个路由
 app = FastAPI()
 
 app.include_router(callback.router)
diff --git a/kds/routers/callback.py b/kds/routers/callback.py
index 317663a..ea68547 100644
--- a/kds/routers/callback.py
+++ b/kds/routers/callback.py
@@ -56,12 +56,14 @@ async def wechat_callback_post(request: Request):
 
     # 3. 获取消息类型
     msg_type = root.find("MsgType").text
+    from_user_name = root.find("FromUserName").text
 
     # 4. 处理消息
     if msg_type == "text":
         # 4.1. 处理文本消息
         content = root.find("Content").text
-        return JSONResponse(content={"Content": content})
+        return content
+        # return JSONResponse(content={"Content": content})
     else:
         # 4.2. 处理其他类型消息
-        return JSONResponse(content={"Content": ""})
+        return PlainTextResponse("Some content")
diff --git a/kds/services/__init__.py b/kds/services/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/kds/services/msg.py b/kds/services/msg.py
new file mode 100644
index 0000000..86ff2a4
--- /dev/null
+++ b/kds/services/msg.py
@@ -0,0 +1,13 @@
+from kds.database import Base
+from sqlalchemy import Column, Integer, String, relationship, ForeignKey
+
+
+class Msg(Base):
+    __tablename__ = "msg"
+
+    id = Column(Integer, primary_key=True, index=True)
+    msg_id = Column(Integer)
+    content = Column(String(300))
+
+    user_id = Column(Integer, ForeignKey("user.id"))
+    user = relationship("User", back_populates="posts")
diff --git a/kds/services/user.py b/kds/services/user.py
new file mode 100644
index 0000000..20b5634
--- /dev/null
+++ b/kds/services/user.py
@@ -0,0 +1,11 @@
+# 从中央database模块导入Base，确保所有模型使用同一个基类
+from kds.database import Base
+from sqlalchemy import Column, Integer, String
+
+
+class User(Base):
+    __tablename__ = "user"
+
+    id = Column(Integer, primary_key=True, index=True)
+    open_id = Column(String(100))
+    msgs = relationship("Msg", back_populates="user")