diff --git a/apps/wpm/serializers.py b/apps/wpm/serializers.py
index 59914f5e..17144e96 100644
--- a/apps/wpm/serializers.py
+++ b/apps/wpm/serializers.py
@@ -592,7 +592,7 @@ class HandoverSerializer(CustomModelSerializer):
         attrs['send_dept'] = wm.belong_dept
         if handoverb[0]["wm"].mgroup:
             attrs['send_mgroup'] = handoverb[0]["wm"].mgroup
-        if material.process and material.process.into_wm_mgroup and 'recive_mgroup' not in attrs:
+        if attrs['material'].process and attrs['material'].process.into_wm_mgroup and 'recive_mgroup' not in attrs:
             raise ValidationError('必须指定交接工段')
         if 'recive_mgroup' in attrs and attrs['recive_mgroup']:
             attrs['recive_dept'] = attrs['recive_mgroup'].belong_dept