diff --git a/app/utils/construction_monitor.py b/app/utils/construction_monitor.py
index affcc09..ef83b2a 100644
--- a/app/utils/construction_monitor.py
+++ b/app/utils/construction_monitor.py
@@ -175,9 +175,11 @@ class ConstructionMonitorUtils:
             # 核心修改：冬休回溯场景下调整测量间隔（基准周期）
             original_period = self.compatible_periods[base_condition]
             if is_winter_break:
-                # 规则1：原周期为3天则改为7天；规则2：其他周期直接翻倍
+                # 规则1：原周期为3天则改为7天；规则2：原周期为14天则改为30天；规则3：其他周期直接翻倍
                 if original_period == 3:
                     adjusted_period = 7
+                elif original_period == 14:
+                    adjusted_period = 30
                 else:
                     adjusted_period = original_period * 2
             else: