diff --git a/apps/pm/views.py b/apps/pm/views.py
index 324d55d1..eadc1cc8 100644
--- a/apps/pm/views.py
+++ b/apps/pm/views.py
@@ -85,7 +85,7 @@ class UtaskViewSet(CustomModelViewSet):
 
         任务分解
         """
-        sr = PkSerializer(data=request.data)
+        sr = SchedueMtasksSerializer(data=request.data)
         sr.is_valid(raise_exception=True)
         vdata = sr.validated_data
         utasks = Utask.objects.filter(