diff --git a/apps/mtm/services.py b/apps/mtm/services.py
index 3813a6ad..73f7e213 100644
--- a/apps/mtm/services.py
+++ b/apps/mtm/services.py
@@ -127,9 +127,16 @@ def mgroup_run_change(mgroup: Mgroup, new_run: bool, last_timex: datetime):
                 last_stlog.save()
                 cal_exp_duration_sec(last_stlog.id)  # 触发时间分配
             elif last_stlog.end_time and new_run is False and last_timex > last_stlog.end_time:  # 从开到停
-                has_same_stlog =StLog.objects.filter(mgroup=mgroup, is_shutdown=True, start_time=last_timex).exists()
-                if not has_same_stlog:
-                    StLog.objects.create(title="停机", is_shutdown=True, mgroup=mgroup, end_time=None, start_time=last_timex, sflog=get_sflog(mgroup, last_timex))
+                StLog.objects.get_or_create(
+                    mgroup=mgroup,
+                    is_shutdown=True,
+                    start_time=last_timex,
+                    defaults={
+                        'title': '停机',
+                        'end_time': None,
+                        'sflog': get_sflog(mgroup, last_timex)
+                    }
+                )
     elif new_run is False:
         StLog.objects.create(title="停机", is_shutdown=True, mgroup=mgroup, end_time=None, start_time=last_timex, sflog=get_sflog(mgroup, last_timex))
         mgroup.is_running = False