diff --git a/apps/inm/migrations/0016_auto_20240402_1226.py b/apps/inm/migrations/0016_auto_20240402_1226.py
new file mode 100644
index 00000000..6e94a513
--- /dev/null
+++ b/apps/inm/migrations/0016_auto_20240402_1226.py
@@ -0,0 +1,30 @@
+# Generated by Django 3.2.12 on 2024-04-02 04:26
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('system', '0003_alter_permission_parent'),
+        ('inm', '0015_auto_20240402_1139'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='materialbatch',
+            name='production_dept',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='system.dept', verbose_name='生产车间'),
+        ),
+        migrations.AlterField(
+            model_name='materialbatch',
+            name='count',
+            field=models.DecimalField(decimal_places=3, default=0, max_digits=12, verbose_name='存量'),
+        ),
+        migrations.AlterField(
+            model_name='mioitem',
+            name='count',
+            field=models.DecimalField(decimal_places=3, max_digits=12, verbose_name='出入数量'),
+        ),
+    ]
diff --git a/apps/inm/models.py b/apps/inm/models.py
index 2e9c487c..7635adf2 100644
--- a/apps/inm/models.py
+++ b/apps/inm/models.py
@@ -25,7 +25,8 @@ class MaterialBatch(BaseModel):
         Material, on_delete=models.CASCADE, verbose_name='物料')
     warehouse = models.ForeignKey(
         WareHouse, on_delete=models.CASCADE, verbose_name='所在仓库')
-    count = models.PositiveIntegerField('存量', default=0)
+    count = models.DecimalField('存量', max_digits=12, decimal_places=3, default=0)
+    production_dept = models.ForeignKey('system.dept', verbose_name='生产车间', on_delete=models.CASCADE, null=True, blank=True)
     expiration_date = models.DateField('有效期', null=True, blank=True)
 
     class Meta:
@@ -107,7 +108,7 @@ class MIOItem(BaseModel):
     material = models.ForeignKey(
         Material, verbose_name='物料', on_delete=models.CASCADE)
     batch = models.CharField('批次号', max_length=50)
-    count = models.PositiveIntegerField('出入数量', default=0)
+    count = models.DecimalField('出入数量', max_digits=12, decimal_places=3)
 
     test_date = models.DateField('检验日期', null=True, blank=True)
     test_user = models.ForeignKey(