diff --git a/apps/mtm/migrations/0059_material_bin_number_main.py b/apps/mtm/migrations/0059_material_bin_number_main.py
new file mode 100644
index 00000000..80574563
--- /dev/null
+++ b/apps/mtm/migrations/0059_material_bin_number_main.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.2.12 on 2025-06-18 08:29
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('mtm', '0058_process_wpr_number_rule'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='material',
+            name='bin_number_main',
+            field=models.CharField(blank=True, max_length=50, null=True, verbose_name='主库位号'),
+        ),
+    ]
diff --git a/apps/mtm/models.py b/apps/mtm/models.py
index 2c3fa008..8e941d93 100644
--- a/apps/mtm/models.py
+++ b/apps/mtm/models.py
@@ -101,6 +101,7 @@ class Material(CommonAModel):
     brothers = models.JSONField('兄弟件', default=list, null=False, blank=True)
     unit_price = models.DecimalField('单价', max_digits=14, decimal_places=2, null=True, blank=True)
     into_wm = models.BooleanField('是否进入车间库存', default=True)
+    bin_number_main = models.CharField('主库位号', max_length=50, null=True, blank=True)
 
     class Meta:
         verbose_name = '物料表'