diff --git a/hb_server/apps/inm/migrations/0026_alter_fifo_inout_date.py b/hb_server/apps/inm/migrations/0026_alter_fifo_inout_date.py
new file mode 100644
index 0000000..f086ed3
--- /dev/null
+++ b/hb_server/apps/inm/migrations/0026_alter_fifo_inout_date.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.2.9 on 2022-01-14 07:32
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('inm', '0025_auto_20220113_0932'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='fifo',
+            name='inout_date',
+            field=models.DateField(blank=True, null=True, verbose_name='出入库日期'),
+        ),
+    ]
diff --git a/hb_server/apps/inm/models.py b/hb_server/apps/inm/models.py
index 21105c0..6d179f6 100644
--- a/hb_server/apps/inm/models.py
+++ b/hb_server/apps/inm/models.py
@@ -76,7 +76,7 @@ class FIFO(CommonADModel):
     is_audited = models.BooleanField('是否审核', default=False)
     auditor = models.ForeignKey(
         User, verbose_name='审核人', on_delete=models.CASCADE, null=True, blank=True)
-    inout_date = models.DateField('出入库日期')
+    inout_date = models.DateField('出入库日期', null=True, blank=True)
     remark = models.CharField('备注', max_length=1000, default='')
 
 
diff --git a/hb_server/apps/inm/views.py b/hb_server/apps/inm/views.py
index 2b3af52..0aa9d0f 100644
--- a/hb_server/apps/inm/views.py
+++ b/hb_server/apps/inm/views.py
@@ -7,7 +7,9 @@ from rest_framework.viewsets import GenericViewSet, ModelViewSet
 from apps.inm.filters import IProductFilterSet, MbFilterSet
 
 from apps.inm.models import FIFO, FIFOItem, IProduct, MaterialBatch, WareHouse, Inventory
-from apps.inm.serializers import FIFOItemSerializer, FIFOInPurSerializer, FIFOListSerializer, IProductListSerializer, InmTestRecordCreateSerializer, MaterialBatchQuerySerializer, MaterialBatchSerializer, WareHouseSerializer, WareHouseCreateUpdateSerializer, InventorySerializer
+from apps.inm.serializers import FIFOItemSerializer, FIFOInPurSerializer, FIFOListSerializer, IProductListSerializer, \
+    InmTestRecordCreateSerializer, MaterialBatchQuerySerializer, MaterialBatchSerializer, WareHouseSerializer, \
+    WareHouseCreateUpdateSerializer, InventorySerializer
 from apps.inm.signals import update_inm
 from apps.mtm.models import Material
 from apps.pm.services import PmService
@@ -20,6 +22,7 @@ from django.utils import timezone
 
 from apps.wpm.services import WpmServies
 
+
 # Create your views here.
 
 
@@ -173,7 +176,7 @@ class FIFOViewSet(ListModelMixin, DestroyModelMixin, GenericViewSet):
         with transaction.atomic():
             obj.is_audited = True
             obj.auditor = request.user
-            obj.inout_date = timezone.now() # 也是审核日期
+            obj.inout_date = timezone.now()  # 也是审核日期
             obj.save()
             update_inm(obj)  # 更新库存
         return Response()