diff --git a/douzero/server/battle.py b/douzero/server/battle.py
index 8222763..df9bd0e 100644
--- a/douzero/server/battle.py
+++ b/douzero/server/battle.py
@@ -94,10 +94,12 @@ def battle_logic(flags, baseline : Baseline, battle : Battle):
     battle.status = 1 if challenge_success else 2
     battle.save()
     if not challenge_success:
-        onnx_path = str(battle.challenger_path) + '.onnx'
-        if os.path.exists(onnx_path):
-            os.remove(onnx_path)
-        os.remove(str(battle.challenger_path))
+        cnt = Battle.select().where(Battle.status == 0).count()
+        if cnt == 0:
+            onnx_path = str(battle.challenger_path) + '.onnx'
+            if os.path.exists(onnx_path):
+                os.remove(onnx_path)
+            os.remove(str(battle.challenger_path))
     else:
         baseline_players[position_idx[battle.challenger_position]] = DeepAgent(battle.challenger_position, str(battle.challenger_path), use_onnx=True)