diff --git a/apps/wpm/datax.py b/apps/wpm/datax.py
index b10252e5..6ade85d1 100644
--- a/apps/wpm/datax.py
+++ b/apps/wpm/datax.py
@@ -40,7 +40,7 @@ class AnaViewSet(GenericViewSet):
         mlog_qs = mlog_qs | Mlog.objects.filter(work_start_time__lte=now, work_end_time__gte=now)
         mlog_qs = mlog_qs.annotate(t_count_use=Sum('b_mlog__count_use'))
         mlog_qs = mlog_qs.order_by('work_start_time')
-        mlog_qs_v = mlog_qs.values('id', 'equipment__id', 't_count_use', 'reminder_interval_list', 'work_start_time')
+        mlog_qs_v = mlog_qs.values('id', 'equipment__id', 't_count_use', 'reminder_interval_list', 'work_start_time', 'work_end_time')
         mlog_qs_l = list(mlog_qs_v)
         mlog_dict = {item['equipment__id']: item for item in mlog_qs_l}
 
@@ -56,7 +56,8 @@ class AnaViewSet(GenericViewSet):
                 mlog_dict_v = mlog_dict[item['id']]
                 item['t_count_use'] = mlog_dict_v['t_count_use']
                 item['reminder_interval_list'] = mlog_dict_v['reminder_interval_list']
-                item['work_start_time'] = mlog_dict_v['work_start_time']
+                item['work_start_time'] = mlog_dict_v['work_start_time'].strftime('%Y-%m-%d %H:%M:%S') if mlog_dict_v['work_start_time'] else None
+                item['work_end_time'] = mlog_dict_v['work_end_time'].strftime('%Y-%m-%d %H:%M:%S') if mlog_dict_v['work_end_time'] else None
                 item['mstate'] = tran_time_to_mstate(mstate_json, mlog_dict_v['reminder_interval_list'], mlog_dict_v['work_start_time'], now)
                 
             if item['state'] in [Equipment.EQUIP_STATE_SCRAP, Equipment.EQUIP_STATE_FIX]: