diff --git a/apps/mtm/migrations/0051_route_parent.py b/apps/mtm/migrations/0051_route_parent.py
new file mode 100644
index 00000000..17a88dd1
--- /dev/null
+++ b/apps/mtm/migrations/0051_route_parent.py
@@ -0,0 +1,19 @@
+# Generated by Django 3.2.12 on 2025-02-19 05:55
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('mtm', '0050_auto_20250207_1002'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='route',
+            name='parent',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='mtm.route', verbose_name='上级路线'),
+        ),
+    ]
diff --git a/apps/mtm/models.py b/apps/mtm/models.py
index 20921b45..166543c2 100644
--- a/apps/mtm/models.py
+++ b/apps/mtm/models.py
@@ -237,6 +237,7 @@ class Route(CommonADModel):
     batch_bind = models.BooleanField('是否绑定批次', default=True)
     materials = models.ManyToManyField(Material, verbose_name='关联辅助物料', related_name="route_materials",
                                   through="mtm.routemat", blank=True)
+    parent = models.ForeignKey('self', verbose_name='上级路线', on_delete=models.CASCADE, null=True, blank=True)
 
     @staticmethod
     def get_routes(material: Material):
diff --git a/apps/pm/services.py b/apps/pm/services.py
index 3dc407fc..b1458621 100644
--- a/apps/pm/services.py
+++ b/apps/pm/services.py
@@ -26,12 +26,15 @@ class PmService:
                 if indx + 1 == rate_len: # 循环到最后一步
                     break
                 div_number0 = 1
-                rate, div_number, mtype = rate_list[indx+1]
-                if mtype == Process.PRO_DIV:
-                    div_number0 = div_number
-                elif mtype == Process.PRO_MERGE:
-                    div_number0 = 1/div_number
-                xcount = xcount/(rate/100)/div_number0
+                rate, div_number, mtype, rq = rate_list[indx+1]
+                if rq.parent is None:
+                    xcount = 0
+                else:
+                    if mtype == Process.PRO_DIV:
+                        div_number0 = div_number
+                    elif mtype == Process.PRO_MERGE:
+                        div_number0 = 1/div_number
+                    xcount = xcount/(rate/100)/div_number0
                 indx = indx + 1
             r_list.append(math.ceil(xcount))
         return r_list
@@ -136,7 +139,7 @@ class PmService:
             if not rqs.exists():
                 raise ParseError('未配置工艺路线')
             # 通过出材率校正任务数, out_rate 默认为 100
-            out_rate_list = [(rq.out_rate, rq.div_number, rq.process.mtype) for rq in rqs]
+            out_rate_list = [(rq.out_rate, rq.div_number, rq.process.mtype, rq) for rq in rqs]
             count_task_list = cls.cal_real_task_count(count,out_rate_list)
             # 创建小任务
             for ind, val in enumerate(rqs):