diff --git a/web/backend/main.py b/web/backend/main.py
index 513706c..e7073de 100644
--- a/web/backend/main.py
+++ b/web/backend/main.py
@@ -12,10 +12,16 @@ from starlette.middleware.base import BaseHTTPMiddleware
 
 from .database import init_db
 from .routers import auth, users, accounts, login, proxy, cookies, logs
+from utils import setup_logger
 
 
 @asynccontextmanager
 async def lifespan(app: FastAPI):
+    # 初始化日志（控制台 + 文件）
+    _log_level = os.getenv("LOG_LEVEL", "DEBUG")
+    _log_dir = Path(__file__).resolve().parents[2] / "logs"
+    setup_logger(level=_log_level, log_file=str(_log_dir / "app.log"))
+
     init_db()
     yield