diff --git a/apps/wpm/migrations/0026_alter_wmaterial_unique_together.py b/apps/wpm/migrations/0026_alter_wmaterial_unique_together.py
new file mode 100644
index 00000000..f813567d
--- /dev/null
+++ b/apps/wpm/migrations/0026_alter_wmaterial_unique_together.py
@@ -0,0 +1,19 @@
+# Generated by Django 3.2.12 on 2023-11-01 10:15
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('mtm', '0022_alter_material_cate'),
+        ('system', '0002_myschedule'),
+        ('wpm', '0025_auto_20231101_1751'),
+    ]
+
+    operations = [
+        migrations.AlterUniqueTogether(
+            name='wmaterial',
+            unique_together={('material', 'batch', 'belong_dept')},
+        ),
+    ]
diff --git a/apps/wpm/models.py b/apps/wpm/models.py
index 052b877f..80dd9b71 100644
--- a/apps/wpm/models.py
+++ b/apps/wpm/models.py
@@ -78,6 +78,9 @@ class WMaterial(CommonBDModel):
     batch = models.CharField('批次号', max_length=50)
     count = models.PositiveIntegerField('当前数量', default=0)
 
+    class Meta:
+        unique_together = ('material', 'batch', 'belong_dept')
+
 
 class Mlog(CommonADModel):
     """