diff --git a/.gitignore b/.gitignore
index 6bc2ebd..1152784 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 .trae/documents/add_traefik_config_plan.md
 redis/data/dump.rdb
 redis/logs/redis-server.log
+backend/auth/__pycache__/app.cpython-313.pyc
diff --git a/backend/auth/Dockerfile b/backend/auth/Dockerfile
deleted file mode 100644
index e69de29..0000000
diff --git a/backend/auth/app.py b/backend/auth/app.py
new file mode 100644
index 0000000..cb4c96a
--- /dev/null
+++ b/backend/auth/app.py
@@ -0,0 +1,18 @@
+from fastapi import FastAPI
+
+#实例化FastAPI
+app = FastAPI()
+
+# 声明装饰器方法和路径
+@app.get("/")
+# 声明装饰器函数
+async def home():
+    return {"message": "Hello World"}
+
+# 如果使用命令行启动，使用uvicorn 文件名:app --reload启动即可，下面命令就不用写
+# 如果写下面的命令，就不需要命令行启动了，直接用IDE运行即可
+if __name__ == "__main__":
+    import uvicorn
+    import os
+    name = f"{os.path.splitext(os.path.basename(os.path.abspath(__file__)))[0]}:app"
+    uvicorn.run(name, host="0.0.0.0", port=8000)
\ No newline at end of file
diff --git a/backend/auth/dockerfile/.dockerignore b/backend/auth/dockerfile/.dockerignore
new file mode 100644
index 0000000..de6b79f
--- /dev/null
+++ b/backend/auth/dockerfile/.dockerignore
@@ -0,0 +1 @@
+../.venv/
\ No newline at end of file
diff --git a/backend/auth/dockerfile/Dockerfile b/backend/auth/dockerfile/Dockerfile
new file mode 100644
index 0000000..b9bc4c7
--- /dev/null
+++ b/backend/auth/dockerfile/Dockerfile
@@ -0,0 +1,12 @@
+FROM python:3.13-slim
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY .. .
+
+EXPOSE 8000
+
+CMD ["python", "app.py"]
diff --git a/backend/auth/requirements.txt b/backend/auth/requirements.txt
new file mode 100644
index 0000000..886b969
--- /dev/null
+++ b/backend/auth/requirements.txt
@@ -0,0 +1,10 @@
+# FastAPI核心
+fastapi>=0.133.0
+uvicorn[standard]>=0.41.0
+
+# PostgreSQL + SQLAlchemy ORM（包含异步支持）
+sqlalchemy>=2.0.46
+asyncpg>=0.31.0
+
+# Redis异步客户端
+redis>=7.2.0
\ No newline at end of file
diff --git a/docker-compose/docker-compose.yml b/docker-compose/docker-compose.yml
index 891b038..64c41aa 100644
--- a/docker-compose/docker-compose.yml
+++ b/docker-compose/docker-compose.yml
@@ -100,6 +100,44 @@ services:
     networks:
       - bs-network
 
+  # Auth 服务
+  auth:
+    build:
+      context: ../backend/auth/dockerfile
+      dockerfile: Dockerfile
+    container_name: bs-auth
+    restart: always
+    ports:
+      - "${AUTH_PORT}:8000"
+    volumes:
+      # 挂载宿主机代码目录到容器，实现实时同步
+      - ../backend/auth:/app
+    environment:
+      - DB_HOST=postgres
+      - DB_PORT=5432
+      - DB_USER=${DB_USER}
+      - DB_PASSWORD=${DB_PASSWORD}
+      - DB_NAME=${DB_NAME}
+      - REDIS_HOST=redis
+      - REDIS_PORT=6379
+      - REDIS_PASSWORD=${REDIS_PASSWORD}
+    depends_on:
+      - postgres
+      - redis
+    labels:
+      # Traefik 配置
+      - "traefik.enable=true"
+      - "traefik.docker.network=bs-network"
+      - "traefik.http.routers.auth.rule=Host(`localhost`) && PathPrefix(`/auth`)"
+      - "traefik.http.services.auth.loadbalancer.server.port=8000"
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8000/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+    networks:
+      - bs-network
+
 networks:
   bs-network:
     driver: bridge
\ No newline at end of file