diff --git a/apps/opm/services.py b/apps/opm/services.py
index aa3ccbfb..adefa884 100644
--- a/apps/opm/services.py
+++ b/apps/opm/services.py
@@ -103,6 +103,11 @@ def opl_start(ticket: Ticket):
 
 
 def start_mtask(opl: Opl):
+    if opl.mtask_uid:
+        # 先关闭
+        close_mtask(opl.mtask_uid)
+        opl.mtask_uid = None
+        opl.save()
     op = opl.operation
     mtask_uid = None
     vc_codes = []
diff --git a/apps/opm/views.py b/apps/opm/views.py
index def46227..81b63cfa 100644
--- a/apps/opm/views.py
+++ b/apps/opm/views.py
@@ -111,11 +111,6 @@ class OplViewSet(CustomModelViewSet):
         开启作业监控
         """
         obj = self.get_object()
-        if obj.mtask_uid:
-            # 先关闭
-            close_mtask(obj.mtask_uid)
-            obj.mtask_uid = None
-            obj.save()
         res = start_mtask(obj)
         return Response(res)