diff --git a/app/db_cross_delay.py b/app/db_cross_delay.py
index 92ba0c6..b75c28a 100644
--- a/app/db_cross_delay.py
+++ b/app/db_cross_delay.py
@@ -44,6 +44,8 @@ class CrossDbHelper(TableDbHelperBase):
         return self.do_select(sql)
 
     def query_crosses_examine_records(self, crossid_list, first_date, min_date):
+        if not crossid_list:
+            return []
         crossids = ','.join(["'" + str(item) + "'" for item in crossid_list])
         sql = """
             select * from cross_doctor_matedata.cross_phase_problems_record where crossid in (%s) and first_date <= '%s' and (end_date >= '%s' or end_date is null)
diff --git a/app/monitor_common.py b/app/monitor_common.py
index 55bed98..9273e78 100644
--- a/app/monitor_common.py
+++ b/app/monitor_common.py
@@ -291,7 +291,7 @@ def gen_monitor_cross_ledger_info(routing_crosses, nodeid, area_id, slc_company_
     inroadid_list = [item['roadid'] for item in all_crosses_inroads]
     cross_has_reverse_lane = db_tmnet.check_reverse_turn(inroadid_list)
     virtual_roads = db_tmnet.query_virtual_roads(crossid_list)
-    has_reverse_turn = int(cross_has_reverse_lane) + int(sum([item['reverse_turn'] for item in virtual_roads if item['reverse_turn']]))
+    has_reverse_turn = int(cross_has_reverse_lane) + int(sum([item['reverse_turn'] for item in virtual_roads if item['reverse_turn']])) if cross_has_reverse_lane else 0
     reversible_lane_num = db_tmnet.calc_has_reversible_lane_crosses(crossid_list)[0]['num']
     special_info = {
         'reverse_turn': has_reverse_turn,