diff --git a/apps/mtm/migrations/0054_process_parent.py b/apps/mtm/migrations/0054_process_parent.py
new file mode 100644
index 00000000..c6f0dee3
--- /dev/null
+++ b/apps/mtm/migrations/0054_process_parent.py
@@ -0,0 +1,19 @@
+# Generated by Django 3.2.12 on 2025-03-21 08:29
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('mtm', '0053_mgroup_mtype'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='process',
+            name='parent',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='mtm.process', verbose_name='父工序'),
+        ),
+    ]
diff --git a/apps/mtm/models.py b/apps/mtm/models.py
index 59f4217d..f0b042fa 100644
--- a/apps/mtm/models.py
+++ b/apps/mtm/models.py
@@ -27,6 +27,7 @@ class Process(CommonBModel):
     batch_append_equip = models.BooleanField('批号追加设备', default=False)
     mlog_need_ticket = models.BooleanField('日志提交是否需要审批', default=False)
     mstate_json = models.JSONField('中间状态', default=list, blank=True)
+    parent = models.ForeignKey('self', verbose_name='父工序', on_delete=models.CASCADE, null=True, blank=True)
 
     class Meta:
         verbose_name = '工序'
diff --git a/apps/mtm/serializers.py b/apps/mtm/serializers.py
index 5f70c52b..12acc89c 100644
--- a/apps/mtm/serializers.py
+++ b/apps/mtm/serializers.py
@@ -178,6 +178,8 @@ class RouteSerializer(CustomModelSerializer):
         process: Process = attrs.get('process', None)
         if process is None:
             raise ParseError('未提供操作工序')
+        if process.parent is not None:
+            raise ParseError('操作工序不可为子工序')
         if process.mtype == Process.PRO_DIV and attrs.get('div_number', 1) <= 1:
             raise ParseError('切分数量必须大于1') 
         return super().validate(attrs)
diff --git a/apps/mtm/views.py b/apps/mtm/views.py
index 47c5c2d2..19019251 100644
--- a/apps/mtm/views.py
+++ b/apps/mtm/views.py
@@ -190,7 +190,10 @@ class ProcessViewSet(CustomModelViewSet):
     serializer_class = ProcessSerializer
     select_related_fields = ['belong_dept']
     search_fields = ['name', 'cate']
-    filterset_fields = ['cate']
+    filterset_fields = {
+        "cate": ['exact'],
+        "parent": ['isnull']
+    }
     ordering = ['sort', 'create_time']
 
     def perform_destroy(self, instance):