diff --git a/apps/mtm/filters.py b/apps/mtm/filters.py
index c36c4568..7724936d 100644
--- a/apps/mtm/filters.py
+++ b/apps/mtm/filters.py
@@ -11,6 +11,7 @@ class MaterialFilter(filters.FilterSet):
         fields = {
             "id": ["exact", "in"],
             "cate": ["exact", "in"],
+            "code": ["exact", "in", "isnull"],
             "type": ["exact", "in"],
             "is_hidden": ["exact"],
             "is_assemb": ["exact"],
diff --git a/apps/mtm/migrations/0044_mgroup_code.py b/apps/mtm/migrations/0044_mgroup_code.py
new file mode 100644
index 00000000..152f3680
--- /dev/null
+++ b/apps/mtm/migrations/0044_mgroup_code.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.2.12 on 2024-12-12 03:07
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('mtm', '0043_srule'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='mgroup',
+            name='code',
+            field=models.CharField(blank=True, max_length=50, null=True, verbose_name='标识'),
+        ),
+    ]
diff --git a/apps/mtm/models.py b/apps/mtm/models.py
index dd358c4e..dc8649bb 100644
--- a/apps/mtm/models.py
+++ b/apps/mtm/models.py
@@ -118,7 +118,7 @@ class Mgroup(CommonBModel):
     """
 
     name = models.CharField('名称', max_length=50)
-    # code = models.CharField('标识', max_length=50, null=True, blank=True)
+    code = models.CharField('标识', max_length=50, null=True, blank=True)
     cate = models.CharField(
         '分类', max_length=50, default='section', help_text='section/other')  # section是工段
     shift_rule = models.CharField('班次规则', max_length=10, default='默认')