diff --git a/app/api/endpoints/order.py b/app/api/endpoints/order.py
index 841d5e4..6237527 100644
--- a/app/api/endpoints/order.py
+++ b/app/api/endpoints/order.py
@@ -193,7 +193,10 @@ async def pre_order(
             UserDB.is_delivering == True
         ).first()
 
-        if not deliveryman_online:
+        print(f"deliveryman_online: {deliveryman_online}")
+
+        if deliveryman_online is None:
+            print(f"没有配送员在线, 无法下单")
             return error_response(code=400, message="没有配送员在线, 无法下单")