diff --git a/apps/wpm/serializers.py b/apps/wpm/serializers.py
index 1788594f..d3991f97 100644
--- a/apps/wpm/serializers.py
+++ b/apps/wpm/serializers.py
@@ -211,6 +211,12 @@ class WMaterialCreateSerializer(CustomModelSerializer):
     class Meta:
         model = WMaterial
         fields = ['material', 'count', 'batch', 'mgroup']
+        extra_kwargs = {
+            'material': {'required': True},
+            'count': {'required': True},
+            'batch': {'required': True},
+            'mgroup': {'required': True, 'allow_null': False},
+        }
 
     def validate(self, attrs):
         attrs['belong_dept'] = attrs['mgroup'].belong_dept