diff --git a/qqbot/bot.py b/qqbot/bot.py
index 4692cd0..9e5b30b 100755
--- a/qqbot/bot.py
+++ b/qqbot/bot.py
@@ -25,12 +25,13 @@ def recv_msg():
         and data["group_id"] == 346058845
     ):
         name = data["raw_message"]
-        query = select(m for m in Melee if m.name == name)
-        if query.count() > 0:
-            return {
-                "reply": f"[CQ]:image,file=http://localhost:7000/pics/{name}.png",
-                "at_sender": False,
-            }
+        with db_session:
+            query = select(m for m in Melee if m.name == name)
+            if query.count() > 0:
+                return {
+                    "reply": f"[CQ:image,file=http://localhost:7000/pics/{name}.png]",
+                    "at_sender": False,
+                }
     return "OK"