diff --git a/apps/wpm/serializers.py b/apps/wpm/serializers.py
index ca29e518..19d89728 100644
--- a/apps/wpm/serializers.py
+++ b/apps/wpm/serializers.py
@@ -186,6 +186,7 @@ class WMaterialSerializer(CustomModelSerializer):
         source='belong_dept.name', read_only=True)
     material_origin_name = serializers.StringRelatedField(source='material_origin', read_only=True)
     notok_sign_name = serializers.SerializerMethodField()
+    defect_name = serializers.CharField(source="defect.name", read_only=True)
     count_working = serializers.IntegerField(read_only=True, label='在制数量')
 
     def get_notok_sign_name(self, obj):