diff --git a/apps/inm/models.py b/apps/inm/models.py
index 7c0fe546..c14b6afc 100644
--- a/apps/inm/models.py
+++ b/apps/inm/models.py
@@ -2,7 +2,7 @@ from django.db import models
 from apps.utils.models import BaseModel, CommonBModel, CommonBDModel, CommonADModel
 from apps.pum.models import Supplier, PuOrder
 from apps.sam.models import Customer, Order
-from apps.mtm.models import Material
+from apps.mtm.models import Material, Mgroup
 from apps.system.models import User
 # Create your models here.
 
@@ -75,6 +75,7 @@ class MIO(CommonBDModel):
         '状态', choices=MIO_STATES, default=10, help_text=str(MIO_CREATE))
     type = models.CharField('出入库类型', max_length=10, default=MIO_TYPE_DO_OUT,
                             choices=MIO_TYPES, help_text=str(MIO_TYPES))
+    mgroup = models.ForeignKey(Mgroup, verbose_name='出入库工段', on_delete=models.CASCADE, null=True, blank=True)
     inout_date = models.DateField('出入库日期', null=True, blank=True)
     supplier = models.ForeignKey(
         Supplier, verbose_name='供应商', on_delete=models.CASCADE, null=True, blank=True)
diff --git a/apps/inm/serializers.py b/apps/inm/serializers.py
index 31850e11..caf3623f 100644
--- a/apps/inm/serializers.py
+++ b/apps/inm/serializers.py
@@ -65,6 +65,7 @@ class MIOListSerializer(CustomModelSerializer):
         source='mio_user.name', read_only=True)
     belong_dept_name = serializers.CharField(
         source='belong_dept.name', read_only=True)
+    mgroup_name = serializers.CharField(source='mgroup.name', read_only=True)
     supplier_name = serializers.CharField(
         source='supplier.name', read_only=True)
     customer_name = serializers.CharField(
@@ -163,8 +164,13 @@ class MIODoSerializer(CustomModelSerializer):
     class Meta:
         model = MIO
         fields = ['id', 'number', 'note', 'do_user',
-                  'belong_dept', 'type', 'inout_date']
+                  'belong_dept', 'type', 'inout_date', 'mgroup']
 
+    def validate(self, attrs):
+        if 'mgroup' in attrs and attrs['mgroup']:
+            attrs['belong_dept'] = attrs['mgroup'].belong_dept
+        return attrs
+    
     def create(self, validated_data):
         if validated_data['type'] not in [MIO.MIO_TYPE_DO_OUT, MIO.MIO_TYPE_DO_IN]:
             raise ValidationError('出入库类型错误')