diff --git a/hb_server/apps/mtm/models.py b/hb_server/apps/mtm/models.py
index 620a947..df7a7ec 100644
--- a/hb_server/apps/mtm/models.py
+++ b/hb_server/apps/mtm/models.py
@@ -86,6 +86,7 @@ class StepOperationItem(CommonAModel):
                                              help_text='当为布尔类型时候，可以支持自定义显示形式。{"1":"是","0":"否"}或{"1":"需要","0":"不需要"}，注意数字也需要引号')
     field_choice = models.JSONField('radio、checkbox、select的选项', default=dict, blank=True,
                                     help_text='radio,checkbox,select,multiselect类型可供选择的选项，格式为json如:{"1":"中国", "2":"美国"},注意数字也需要引号')
+    sort = models.IntegerField('排序号', default=1)
     class Meta:
         verbose_name = '操作记录条目'
         verbose_name_plural = verbose_name
diff --git a/hb_server/apps/mtm/serializers.py b/hb_server/apps/mtm/serializers.py
index 928c0a3..60fe1c8 100644
--- a/hb_server/apps/mtm/serializers.py
+++ b/hb_server/apps/mtm/serializers.py
@@ -1,6 +1,6 @@
 from rest_framework.serializers import ModelSerializer
 
-from .models import Material, Process, Step
+from .models import Material, Process, ProductProcess, Step
 from apps.system.serializers import FileSimpleSerializer
 
 
@@ -9,14 +9,35 @@ class MaterialSerializer(ModelSerializer):
         model = Material
         fields = '__all__'
 
+class MaterialSimpleSerializer(ModelSerializer):
+    class Meta:
+        model = Material
+        fields = ['id', 'name', 'number']
+
 class ProcessSerializer(ModelSerializer):
     instruction_ = FileSimpleSerializer(source='instruction', read_only=True)
     class Meta:
         model = Process
         fields = '__all__'
-    
+
+class ProcessSimpleSerializer(ModelSerializer):
+    class Meta:
+        model = Process
+        fields = ['id', 'name', 'number']
 
 class StepSerializer(ModelSerializer):
     class Meta:
         model = Step
-        fields = '__all__'
\ No newline at end of file
+        fields = '__all__'
+
+class ProductProcessListSerializer(ModelSerializer):
+    process_ = ProcessSimpleSerializer(source='process', read_only=True)
+    product_ = MaterialSimpleSerializer(source='product', read_only=True)
+    class Meta:
+        model = ProductProcess
+        fields = '__all__'
+
+class ProductProcessUpdateSerializer(ModelSerializer):
+    class Meta:
+        model = ProductProcess
+        fields = ['sort']
\ No newline at end of file
diff --git a/hb_server/apps/mtm/urls.py b/hb_server/apps/mtm/urls.py
index 5772a69..9d4d325 100644
--- a/hb_server/apps/mtm/urls.py
+++ b/hb_server/apps/mtm/urls.py
@@ -1,12 +1,13 @@
 from django.db.models import base
 from rest_framework import urlpatterns
-from apps.mtm.views import MaterialViewSet, ProcessViewSet, StepViewSet
+from apps.mtm.views import MaterialViewSet, ProcessViewSet, ProductProcessViewSet, StepViewSet
 from django.urls import path, include
 from rest_framework.routers import DefaultRouter
 
 router = DefaultRouter()
 router.register('material', MaterialViewSet, basename='material')
 router.register('process', ProcessViewSet, basename='process')
+router.register('productprocess', ProductProcessViewSet, basename='productprocess')
 router.register('step', StepViewSet, basename='step')
 urlpatterns = [
     path('', include(router.urls)),
diff --git a/hb_server/apps/mtm/views.py b/hb_server/apps/mtm/views.py
index 60b8a88..4b98443 100644
--- a/hb_server/apps/mtm/views.py
+++ b/hb_server/apps/mtm/views.py
@@ -1,9 +1,9 @@
 from django.shortcuts import render
 from rest_framework.viewsets import ModelViewSet, GenericViewSet
-from rest_framework.mixins import CreateModelMixin, UpdateModelMixin, RetrieveModelMixin, DestroyModelMixin
+from rest_framework.mixins import CreateModelMixin, ListModelMixin, UpdateModelMixin, RetrieveModelMixin, DestroyModelMixin
 
-from apps.mtm.models import Material, Process, Step
-from apps.mtm.serializers import MaterialSerializer, ProcessSerializer, StepSerializer
+from apps.mtm.models import Material, Process, ProductProcess, Step
+from apps.mtm.serializers import MaterialSerializer, ProductProcessListSerializer, ProductProcessUpdateSerializer, ProcessSerializer, StepSerializer
 from apps.system.mixins import CreateUpdateModelAMixin, OptimizationMixin
 from rest_framework.decorators import action
 from rest_framework.response import Response
@@ -23,6 +23,16 @@ class MaterialViewSet(CreateUpdateModelAMixin, ModelViewSet):
     ordering_fields = ['number', 'sort_str']
     ordering = ['number']
 
+    @action(methods=['get'], detail=True, perms_map={'get':'*'}, pagination_class=None, serializer_class=StepSerializer)
+    def steps(self, request, pk=None):
+        """
+        工序下的子工序
+        """
+        process = self.get_object()
+        serializer = self.serializer_class(instance=Step.objects.filter(process=process, is_deleted=False), many=True)
+        return Response(serializer.data)
+
+
 class ProcessViewSet(CreateUpdateModelAMixin, ModelViewSet):
     """
     工序表-增删改查
@@ -46,9 +56,27 @@ class ProcessViewSet(CreateUpdateModelAMixin, ModelViewSet):
         return Response(serializer.data)
 
 class StepViewSet(CreateModelMixin, UpdateModelMixin, RetrieveModelMixin, DestroyModelMixin, GenericViewSet):
+    """
+    """
     perms_map = {'*':'process_update'}
     queryset = Step.objects.all()
     serializer_class = StepSerializer
     search_fields = ['name', 'number']
     filterset_fields = ['process']
-    ordering = ['sort']
\ No newline at end of file
+    ordering = ['sort']
+
+
+class ProductProcessViewSet(CreateModelMixin, UpdateModelMixin, ListModelMixin, DestroyModelMixin, GenericViewSet):
+    """
+    产品生产工艺流程增删改查
+    """
+    perms_map={'*':'*'}
+    queryset = ProductProcess.objects.select_related('process', 'product').all()
+    filterset_fields = ['process', 'product']
+    serializer_class = ProductProcessListSerializer
+    ordering = ['sort']
+
+    def get_serializer_class(self):
+        if self.action == 'update':
+            return ProductProcessUpdateSerializer
+        return super().get_serializer_class()
\ No newline at end of file