diff --git a/apps/inm/models.py b/apps/inm/models.py
index 8c729227..c2ef05b2 100644
--- a/apps/inm/models.py
+++ b/apps/inm/models.py
@@ -4,6 +4,8 @@ from apps.pum.models import Supplier, PuOrder
 from apps.sam.models import Customer, Order
 from apps.mtm.models import Material, Mgroup
 from apps.system.models import User
+from datetime import datetime
+from django.db.models import Max
 # Create your models here.
 
 
@@ -49,6 +51,15 @@ class MaterialBatchA(BaseModel):
         MaterialBatch, verbose_name='关联物料批次', on_delete=models.CASCADE, related_name='a_mb')
 
 
+MIO_TYPE_PREFIX = {
+    'do_out': 'SCLL',     # 生产领料 (Shēngchǎn Lǐngliào)
+    'sale_out': 'XSFH',   # 销售发货 (Xiāoshòu Fāhuò)
+    'pur_in': 'CGRK',     # 采购入库 (Cǎigòu Rùkù)
+    'do_in': 'SCRK',      # 生产入库 (Shēngchǎn Rùkù)
+    'other_in': 'QTRK',   # 其他入库 (Qítā Rùkù)
+    'other_out': 'QTCK'   # 其他出库 (Qítā Chūkù)
+}
+
 class MIO(CommonBDModel):
     """
     出入库记录
@@ -101,8 +112,17 @@ class MIO(CommonBDModel):
     materials = models.ManyToManyField(
         Material, verbose_name='物料明细', through='inm.mioitem', blank=True)
 
-    def get_a_number(self, type):
-        pass
+    @classmethod
+    def get_a_number(cls, mio_type:str):
+        today_str = datetime.now().strftime('%Y%m%d')
+        prefix = MIO_TYPE_PREFIX[mio_type]
+        last_record = MIO.objects.filter(number__startswith=f"{prefix}-{today_str}") \
+                                       .aggregate(Max('number'))['number__max']
+        if last_record:
+            last_number = int(last_record.split('-')[-1]) + 1
+        else:
+            last_number = 1
+        return f"{prefix}-{today_str}-{last_number:04d}"
 
 class MIOItem(BaseModel):
     """
diff --git a/apps/inm/serializers.py b/apps/inm/serializers.py
index a84ad558..192c8ce4 100644
--- a/apps/inm/serializers.py
+++ b/apps/inm/serializers.py
@@ -85,7 +85,7 @@ class MIOListSerializer(CustomModelSerializer):
         model = MIO
         fields = '__all__'
         read_only_fields = EXCLUDE_FIELDS + \
-            ['state', 'submit_time', 'submit_user']
+            ['state', 'submit_time', 'submit_user', 'number']
 
 
 class MIOItemACreateSerializer(CustomModelSerializer):
@@ -230,7 +230,8 @@ class MIODoSerializer(CustomModelSerializer):
         model = MIO
         fields = ['id', 'number', 'note', 'do_user',
                   'belong_dept', 'type', 'inout_date', 'mgroup', 'mio_user']
-        extra_kwargs = {'inout_date': {'required': True}, 'do_user': {'required': True}}
+        extra_kwargs = {'inout_date': {'required': True}, 
+                        'do_user': {'required': True}, 'number': {"readonly": True}}
 
     def validate(self, attrs):
         if 'mgroup' in attrs and attrs['mgroup']:
@@ -238,6 +239,7 @@ class MIODoSerializer(CustomModelSerializer):
         return attrs
     
     def create(self, validated_data):
+        validated_data["number"] = MIO.get_a_number(validated_data["type"])
         if validated_data['type'] not in [MIO.MIO_TYPE_DO_OUT, MIO.MIO_TYPE_DO_IN]:
             raise ValidationError('出入库类型错误')
         return super().create(validated_data)
@@ -283,10 +285,11 @@ class MIOPurSerializer(CustomModelSerializer):
     class Meta:
         model = MIO
         fields = ['id', 'number', 'note', 'pu_order', 'inout_date', 'supplier', 'mio_user']
-        extra_kwargs = {'inout_date': {'required': True}}
+        extra_kwargs = {'inout_date': {'required': True}, 'number': {"readonly": True}}
 
     def create(self, validated_data):
         validated_data['type'] = MIO.MIO_TYPE_PUR_IN
+        validated_data['number'] = MIO.get_a_number(validated_data["type"])
         pu_order: PuOrder = validated_data.get('pu_order', None)
         if pu_order:
             if pu_order.state in [PuOrder.PUORDER_CREATE, PuOrder.PUORDER_DONE]:
@@ -309,9 +312,10 @@ class MIOOtherSerializer(CustomModelSerializer):
         model = MIO
         fields = ['id', 'number', 'note', 'supplier',
                   'customer', 'type', 'inout_date', 'mio_user']
-        extra_kwargs = {'inout_date': {'required': True}}
+        extra_kwargs = {'inout_date': {'required': True}, 'number': {"readonly": True}}
 
     def create(self, validated_data):
+        validated_data['number'] = MIO.get_a_number(validated_data["type"])
         if validated_data['type'] not in [MIO.MIO_TYPE_OTHER_OUT, MIO.MIO_TYPE_OTHER_IN]:
             raise ValidationError('出入库类型错误')
         return super().create(validated_data)
diff --git a/apps/wpm/views.py b/apps/wpm/views.py
index 78438892..46ab47a9 100644
--- a/apps/wpm/views.py
+++ b/apps/wpm/views.py
@@ -713,18 +713,19 @@ class MlogbwViewSet(CustomModelViewSet):
                 wm_in = mlogbin.wm_in
                 mlog = mlogbin.mlog
                 div_number = route.div_number
-                m_dict = {
+                if ins.mlogb_to:
+                    mlogbout = ins.mlogb_to
+                else:
+                    m_dict = {
                     "mtask": mlogbin.mtask,
                     "mlog": mlog,
+                    "batch":  ins.number,
                     "material_out": material_out,
                     "batch_ofrom": wm_in.batch_ofrom, 
                     "material_ofrom": wm_in.material_ofrom,
                     "count_real": div_number, 
                     "count_ok": div_number, "qct": mlog.qct
-                }
-                if ins.mlogb_to:
-                    mlogbout = ins.mlogb_to
-                else:
+                    }
                     mlogbout = Mlogb.objects.create(**m_dict)
                     ins.mlogb_to = mlogbout
                     ins.save(update_fields=["mlogb_to"])