diff --git a/app/utils/construction_monitor.py b/app/utils/construction_monitor.py
index 0b9ec4b..e2d5235 100644
--- a/app/utils/construction_monitor.py
+++ b/app/utils/construction_monitor.py
@@ -139,9 +139,9 @@ class ConstructionMonitorUtils:
                 continue
 
             if not base_condition:
-                # 当前为冬休且历史全是冬休 → 视为数据未补全，remaining 固定为 -365
+                # 当前为冬休且历史全是冬休 → 视为数据未补全，用 bu_all=-365 表示；remaining 保持原样不改
                 if latest_condition == "冬休":
-                    item_copy["remaining"] = -365
+                    item_copy["bu_all"] = -365
                     result["data"].append(item_copy)
                 else:
                     result["winter"].append(item_copy)