diff --git a/server_tb_LinkedMall/internal/service/service.go b/server_tb_LinkedMall/internal/service/service.go
new file mode 100644
index 0000000..8e64c0a
--- /dev/null
+++ b/server_tb_LinkedMall/internal/service/service.go
@@ -0,0 +1,382 @@
+package service
+
+import (
+	"encoding/json"
+
+	"server_tb_LinkedMall/internal/biz"
+	"server_tb_LinkedMall/internal/config"
+	"server_tb_LinkedMall/internal/entities"
+)
+
+// LinkedMallService 服务层 - 封装业务逻辑，处理响应解析
+type LinkedMallService struct {
+	biz *biz.LinkedMallBiz
+}
+
+// NewLinkedMallService 创建服务实例
+func NewLinkedMallService(cfg *config.Config) (*LinkedMallService, error) {
+	bizInstance, err := biz.NewLinkedMallBiz(cfg)
+	if err != nil {
+		return nil, err
+	}
+	return &LinkedMallService{biz: bizInstance}, nil
+}
+
+// parseData 解析Data字段到目标结构体
+func (s *LinkedMallService) parseData(commonResp *entities.CommonResponse, target interface{}) error {
+	if commonResp.Data == nil {
+		return nil
+	}
+	dataBytes, err := json.Marshal(commonResp.Data)
+	if err != nil {
+		return err
+	}
+	return json.Unmarshal(dataBytes, target)
+}
+
+// buildAPIResponse 构建统一API响应
+func (s *LinkedMallService) buildAPIResponse(commonResp *entities.CommonResponse, data interface{}) *entities.APIResponse {
+	resp := &entities.APIResponse{
+		Success:   commonResp.Success,
+		Code:      commonResp.Code,
+		Message:   commonResp.Message,
+		RequestId: commonResp.RequestId,
+	}
+
+	if commonResp.Success && data != nil {
+		resp.Data = data
+	}
+	if !commonResp.Success {
+		if commonResp.SubCode != "" {
+			resp.Message = commonResp.SubMessage
+		}
+	}
+	return resp
+}
+
+// ============================================================
+// 接口 1: ListPurchaserShops
+// ============================================================
+func (s *LinkedMallService) ListPurchaserShops(req *entities.ListPurchaserShopsReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.ListPurchaserShops(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.ListPurchaserShopsRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 2: GetPurchaserShop
+func (s *LinkedMallService) GetPurchaserShop(req *entities.GetPurchaserShopReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.GetPurchaserShop(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.GetPurchaserShopRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 3: ListSelectionProducts
+func (s *LinkedMallService) ListSelectionProducts(req *entities.ListSelectionProductsReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.ListSelectionProducts(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.ListSelectionProductsRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 4: GetSelectionProduct
+func (s *LinkedMallService) GetSelectionProduct(req *entities.GetSelectionProductReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.GetSelectionProduct(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.GetSelectionProductRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 5: GetSelectionProductSaleInfo
+func (s *LinkedMallService) GetSelectionProductSaleInfo(req *entities.GetSelectionProductSaleInfoReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.GetSelectionProductSaleInfo(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.GetSelectionProductSaleInfoRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 6: ListSelectionProductSaleInfos
+func (s *LinkedMallService) ListSelectionProductSaleInfos(req *entities.ListSelectionProductSaleInfosReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.ListSelectionProductSaleInfos(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.ListSelectionProductSaleInfosRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 7: ListSelectionSkuSaleInfos
+func (s *LinkedMallService) ListSelectionSkuSaleInfos(req *entities.ListSelectionSkuSaleInfosReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.ListSelectionSkuSaleInfos(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.ListSelectionSkuSaleInfosRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 8: ListCategories
+func (s *LinkedMallService) ListCategories(req *entities.ListCategoriesReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.ListCategories(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.ListCategoriesRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 9: SearchProducts
+func (s *LinkedMallService) SearchProducts(req *entities.SearchProductsReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.SearchProducts(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.SearchProductsRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 10: SelectionGroupAddProduct
+func (s *LinkedMallService) SelectionGroupAddProduct(req *entities.SelectionGroupAddProductReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.SelectionGroupAddProduct(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.SelectionGroupAddProductRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 11: SelectionGroupRemoveProduct
+func (s *LinkedMallService) SelectionGroupRemoveProduct(req *entities.SelectionGroupRemoveProductReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.SelectionGroupRemoveProduct(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.SelectionGroupRemoveProductRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 12: RenderPurchaseOrder
+func (s *LinkedMallService) RenderPurchaseOrder(req *entities.RenderPurchaseOrderReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.RenderPurchaseOrder(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.RenderPurchaseOrderRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 13: SplitPurchaseOrder
+func (s *LinkedMallService) SplitPurchaseOrder(req *entities.SplitPurchaseOrderReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.SplitPurchaseOrder(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.SplitPurchaseOrderRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 14: CreatePurchaseOrder
+func (s *LinkedMallService) CreatePurchaseOrder(req *entities.CreatePurchaseOrderReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.CreatePurchaseOrder(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.CreatePurchaseOrderRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 15: GetPurchaseOrderStatus
+func (s *LinkedMallService) GetPurchaseOrderStatus(req *entities.GetPurchaseOrderStatusReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.GetPurchaseOrderStatus(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.GetPurchaseOrderStatusRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 16: GetOrder
+func (s *LinkedMallService) GetOrder(req *entities.GetOrderReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.GetOrder(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.GetOrderRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 17: QueryOrders
+func (s *LinkedMallService) QueryOrders(req *entities.QueryOrdersReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.QueryOrders(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.QueryOrdersRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 18: ListLogisticsOrders
+func (s *LinkedMallService) ListLogisticsOrders(req *entities.ListLogisticsOrdersReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.ListLogisticsOrders(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.ListLogisticsOrdersRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 19: ConfirmDisburse
+func (s *LinkedMallService) ConfirmDisburse(req *entities.ConfirmDisburseReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.ConfirmDisburse(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.ConfirmDisburseRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 20: RenderRefundOrder
+func (s *LinkedMallService) RenderRefundOrder(req *entities.RenderRefundOrderReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.RenderRefundOrder(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.RenderRefundOrderRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 21: CreateRefundOrder
+func (s *LinkedMallService) CreateRefundOrder(req *entities.CreateRefundOrderReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.CreateRefundOrder(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.CreateRefundOrderRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 22: CancelRefundOrder
+func (s *LinkedMallService) CancelRefundOrder(req *entities.CancelRefundOrderReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.CancelRefundOrder(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.CancelRefundOrderRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 23: GetRefundOrder
+func (s *LinkedMallService) GetRefundOrder(req *entities.GetRefundOrderReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.GetRefundOrder(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.GetRefundOrderRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 24: CreateGoodsShippingNotice
+func (s *LinkedMallService) CreateGoodsShippingNotice(req *entities.CreateGoodsShippingNoticeReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.CreateGoodsShippingNotice(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.CreateGoodsShippingNoticeRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
+
+// 接口 25: QueryChildDivisionCode
+func (s *LinkedMallService) QueryChildDivisionCode(req *entities.QueryChildDivisionCodeReq) (*entities.APIResponse, error) {
+	commonResp, err := s.biz.QueryChildDivisionCode(req)
+	if err != nil {
+		return nil, err
+	}
+	var data entities.QueryChildDivisionCodeRespData
+	if commonResp.Success {
+		_ = s.parseData(commonResp, &data)
+	}
+	return s.buildAPIResponse(commonResp, &data), nil
+}
\ No newline at end of file