diff --git a/backend/app/main.py b/backend/app/main.py
index e2bdec8..cfbf93e 100644
--- a/backend/app/main.py
+++ b/backend/app/main.py
@@ -5,16 +5,29 @@ from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 from fastapi.staticfiles import StaticFiles
 from fastapi.responses import FileResponse
+from contextlib import asynccontextmanager
 from app.config import get_settings
 from app.utils.logger import logger
 from app.api import chat, stock, skills, llm, auth, admin
 import os
 
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    """应用生命周期管理"""
+    # 启动时执行
+    logger.info("应用启动")
+    yield
+    # 关闭时执行
+    logger.info("应用关闭")
+
+
 # 创建FastAPI应用
 app = FastAPI(
     title="A股AI分析Agent系统",
     description="基于AI Agent的股票智能分析系统",
-    version="1.0.0"
+    version="1.0.0",
+    lifespan=lifespan
 )
 
 # 配置CORS
@@ -59,16 +72,6 @@ async def health_check():
     """健康检查"""
     return {"status": "healthy"}
 
-@app.on_event("startup")
-async def startup_event():
-    """启动事件"""
-    logger.info("应用启动")
-
-@app.on_event("shutdown")
-async def shutdown_event():
-    """关闭事件"""
-    logger.info("应用关闭")
-
 if __name__ == "__main__":
     import uvicorn
     uvicorn.run(