diff --git a/hb_server/apps/mtm/models.py b/hb_server/apps/mtm/models.py
index 105cd10..62f983e 100644
--- a/hb_server/apps/mtm/models.py
+++ b/hb_server/apps/mtm/models.py
@@ -134,6 +134,7 @@ class SubProduction(CommonAModel):
     """
     name = models.CharField('命名', max_length=50, null=True, blank=True)
     product = models.ForeignKey(Material, verbose_name='产品', on_delete=models.CASCADE)
+    process = models.ForeignKey(Process, verbose_name='隶属大工序', on_delete=models.CASCADE, related_name='subproduction_process')
     sort = models.IntegerField('排序号', default=1)
 
     class Meta:
diff --git a/hb_server/apps/mtm/serializers.py b/hb_server/apps/mtm/serializers.py
index 7cd8fe5..5f0d43a 100644
--- a/hb_server/apps/mtm/serializers.py
+++ b/hb_server/apps/mtm/serializers.py
@@ -17,8 +17,9 @@ class MaterialDetailSerializer(serializers.ModelSerializer):
         fields = '__all__'
     
     def get_processes_(self, obj):
-        steps = UsedStep.objects.filter(subproduction__product=obj).values_list('step', flat=True)
-        objs = Process.objects.filter(step_process__id__in=steps).distinct().order_by('number')
+        # steps = UsedStep.objects.filter(subproduction__product=obj).values_list('step', flat=True)
+        # objs = Process.objects.filter(step_process__id__in=steps).distinct().order_by('number')
+        objs = Process.objects.filter(subproduction_process__product=obj, subproduction_process__is_deleted=False, is_deleted=False).order_by('number')
         return ProcessSimpleSerializer(instance=objs, many=True).data
 
 
diff --git a/hb_server/apps/mtm/views.py b/hb_server/apps/mtm/views.py
index 0e1c44f..3a4ce4c 100644
--- a/hb_server/apps/mtm/views.py
+++ b/hb_server/apps/mtm/views.py
@@ -75,7 +75,7 @@ class SubProductionViewSet(CreateUpdateModelAMixin, ModelViewSet):
     """
     perms_map={'*':'*'}
     queryset = SubProduction.objects.all()
-    filterset_fields = ['product']
+    filterset_fields = ['product', 'process']
     search_fields = ['name']
     serializer_class = SubProductionSerializer
     ordering = ['sort']