diff --git a/hb_server/apps/mtm/migrations/0040_material_piece_count.py b/hb_server/apps/mtm/migrations/0040_material_piece_count.py
new file mode 100644
index 0000000..04a0360
--- /dev/null
+++ b/hb_server/apps/mtm/migrations/0040_material_piece_count.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.2.9 on 2021-12-01 02:37
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('mtm', '0039_auto_20211201_1016'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='material',
+            name='piece_count',
+            field=models.PositiveSmallIntegerField(blank=True, null=True, verbose_name='单片玻璃数量'),
+        ),
+    ]
diff --git a/hb_server/apps/mtm/models.py b/hb_server/apps/mtm/models.py
index dccb4d0..a131e3d 100644
--- a/hb_server/apps/mtm/models.py
+++ b/hb_server/apps/mtm/models.py
@@ -40,6 +40,7 @@ class Material(CommonAModel):
     sort_str = models.CharField('排序字符', max_length=100, null=True, blank=True)
     unit = models.CharField('基准计量单位', choices=unit_choices, default='块', max_length=10)
     count = models.IntegerField('物料总数', default=0)
+    piece_count = models.PositiveSmallIntegerField('单片玻璃数量', null=True, blank=True)
     class Meta:
         verbose_name = '物料表'
         verbose_name_plural = verbose_name