diff --git a/app/eva_common.py b/app/eva_common.py
index b047075..e68d7a8 100644
--- a/app/eva_common.py
+++ b/app/eva_common.py
@@ -1378,8 +1378,8 @@ def gen_cross_tide_problems(crossid, nodeid, date_list, roads_dir_dict):
     subtend_road_pair = gen_subtend_road_pair(roads_dir_dict)
     road_src_dict = {v['in']: k for k, v in roads_dir_dict.items()}
     max_am_flow, max_pm_flow, tide_index, max_am_flow_road, max_pm_flow_road = 0, 99999999999, 0, '', ''
-    am_inroad_infos = am_avg_cross_delay_info.inroad_delay_infos
-    pm_inroad_infos = pm_avg_cross_delay_info.inroad_delay_infos
+    am_inroad_infos = am_avg_cross_delay_info.inroad_delay_infos if am_avg_cross_delay_info else []
+    pm_inroad_infos = pm_avg_cross_delay_info.inroad_delay_infos if pm_avg_cross_delay_info else []
     am_inroad_info_dict = {item.inroadid: item for item in am_inroad_infos}
     pm_inroad_info_dict = {item.inroadid: item for item in pm_inroad_infos}
     # 找出早高峰最高流量的进口道