diff --git a/apps/mtm/serializers.py b/apps/mtm/serializers.py
index 198d4a60..608756ab 100644
--- a/apps/mtm/serializers.py
+++ b/apps/mtm/serializers.py
@@ -186,6 +186,7 @@ class RouteSerializer(CustomModelSerializer):
                 material_out.name = material.name
                 material_out.model = material.model
                 material_out.specification = material.specification
+                material_out.cate = material.cate
             material_out.save()
             instance.material_out = material_out
             instance.save()
@@ -195,6 +196,7 @@ class RouteSerializer(CustomModelSerializer):
             material_out.is_deleted = False
             if material_out.parent is None:
                 material_out.parent = material
+                material_out.cate = material.cate
             material_out.save()
             instance.material_out = material_out
             instance.save()
@@ -205,6 +207,7 @@ class RouteSerializer(CustomModelSerializer):
                                                                                           'specification': material.specification,
                                                                                           'model': material.model,
                                                                                           'type': Material.MA_TYPE_HALFGOOD,
+                                                                                          'cate': Material.cate,
                                                                                           'create_by': self.request.user,
                                                                                           'update_by': self.request.user,
                                                                                           })