diff --git a/prediction_history.db b/prediction_history.db
index e33ba52..6544b32 100644
Binary files a/prediction_history.db and b/prediction_history.db differ
diff --git a/server/api.py b/server/api.py
index aba5aee..58f7808 100644
--- a/server/api.py
+++ b/server/api.py
@@ -1463,7 +1463,7 @@ def predict():
             
             # 调用辅助函数保存结果
             save_prediction_result(
-                prediction_result=prediction_result,
+                prediction_result=prediction_result.copy(),
                 product_id=product_id or store_id or 'global',
                 product_name=product_name_to_save,
                 model_type=model_type,