diff --git a/apps/wpm/migrations/0081_auto_20250107_1423.py b/apps/wpm/migrations/0081_auto_20250107_1423.py
new file mode 100644
index 00000000..ff64d1bb
--- /dev/null
+++ b/apps/wpm/migrations/0081_auto_20250107_1423.py
@@ -0,0 +1,24 @@
+# Generated by Django 3.2.12 on 2025-01-07 06:23
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('wpm', '0080_mlogb_mlogb_to'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='mlogb',
+            name='parent',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='mlogb_parent', to='wpm.mlogb', verbose_name='父级物料'),
+        ),
+        migrations.AlterField(
+            model_name='mlogb',
+            name='mlogb_to',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='mlogb_to_mlogb', to='wpm.mlogb', verbose_name='生成的'),
+        ),
+    ]
diff --git a/apps/wpm/migrations/0081_mlogb_is_main_batchin.py b/apps/wpm/migrations/0081_mlogb_is_main_batchin.py
deleted file mode 100644
index 604a7d5c..00000000
--- a/apps/wpm/migrations/0081_mlogb_is_main_batchin.py
+++ /dev/null
@@ -1,18 +0,0 @@
-# Generated by Django 3.2.12 on 2025-01-07 03:08
-
-from django.db import migrations, models
-
-
-class Migration(migrations.Migration):
-
-    dependencies = [
-        ('wpm', '0080_mlogb_mlogb_to'),
-    ]
-
-    operations = [
-        migrations.AddField(
-            model_name='mlogb',
-            name='is_main_batchin',
-            field=models.BooleanField(default=True, verbose_name='是否主输入批次'),
-        ),
-    ]
diff --git a/apps/wpm/models.py b/apps/wpm/models.py
index 48aeaf44..6ee32256 100644
--- a/apps/wpm/models.py
+++ b/apps/wpm/models.py
@@ -292,7 +292,6 @@ class Mlog(CommonADModel):
         return mlog_count_fields
 
 class Mlogb(BaseModel):
-    mlogb_to = models.ForeignKey("self", verbose_name='生成的', on_delete=models.SET_NULL, null=True, blank=True)
     mlog = models.ForeignKey(Mlog, verbose_name='关联日志',
                              on_delete=models.CASCADE, related_name='b_mlog')
     note = models.TextField('备注', default='', blank=True)
@@ -304,7 +303,11 @@ class Mlogb(BaseModel):
     material_in = models.ForeignKey(
         Material, verbose_name='投入物料', on_delete=models.CASCADE, related_name='mlogb_material_in',
         null=True, blank=True)
-    is_main_batchin = models.BooleanField('是否主输入批次', default=True)
+
+    parent = models.ForeignKey("self", verbose_name='父级物料', on_delete=models.CASCADE, null=True, blank=True,
+                               related_name='mlogb_parent')
+    mlogb_to = models.ForeignKey("self", verbose_name='生成的', on_delete=models.SET_NULL, null=True, blank=True,
+                                 related_name='mlogb_to_mlogb')
     material_out = models.ForeignKey(
         Material, verbose_name='产物', on_delete=models.CASCADE, related_name='mlogb_material_out',
         null=True, blank=True)
diff --git a/apps/wpm/serializers.py b/apps/wpm/serializers.py
index adf6f930..9aa7541c 100644
--- a/apps/wpm/serializers.py
+++ b/apps/wpm/serializers.py
@@ -525,7 +525,7 @@ class MlogbInSerializer(CustomModelSerializer):
     class Meta:
         model = Mlogb
         fields = ['id', 'mlog', 'mtask', 'wm_in', 'count_use', 'count_pn_jgqbl',
-                  'count_break', 'note', "is_main_batchin"]
+                  'count_break', 'note', "parent"]
         extra_kwargs = {'count_use': {'required': True}, 'mtask': {'required': True}, 'wm_in': {'required': True}}
     
     def validate(self, attrs):
diff --git a/apps/wpm/views.py b/apps/wpm/views.py
index 5e2d0efb..0d6d55c8 100644
--- a/apps/wpm/views.py
+++ b/apps/wpm/views.py
@@ -492,7 +492,7 @@ class MlogbInViewSet(CreateModelMixin, UpdateModelMixin, DestroyModelMixin, Cust
             if material_out is None:
                 raise ParseError('产物不可为空')
             # 如果是主要输入物料且是主批次，才需生成输出
-            if route.material_in != material_in or mlogbin.is_main_batchin is False:
+            if route.material_in != material_in or mlogbin.parent is None:
                 return
             m_dict = {
                 "mtask": mlogbin.mtask,