diff --git a/xy_sh/internal/service/service.go b/xy_sh/internal/service/service.go
new file mode 100644
index 0000000..e0423fb
--- /dev/null
+++ b/xy_sh/internal/service/service.go
@@ -0,0 +1,145 @@
+package service
+
+import (
+	"encoding/json"
+
+	"github.com/gofiber/fiber/v2"
+	"xy_sh/internal/biz"
+	"xy_sh/internal/config"
+	"xy_sh/internal/entities"
+)
+
+// Service 服务层
+type Service struct {
+	biz *biz.Biz
+	cfg *config.Config
+}
+
+// NewService 创建服务实例
+func NewService(cfg *config.Config) *Service {
+	return &Service{
+		biz: biz.NewBiz(cfg),
+		cfg: cfg,
+	}
+}
+
+// Order 卡券/直充权益下单接口
+func (s *Service) Order(c *fiber.Ctx) error {
+	decrypted := c.Locals("decryptedBody").([]byte)
+
+	var req entities.OrderRequest
+	if err := json.Unmarshal(decrypted, &req); err != nil {
+		return c.JSON(entities.ApiResponse{
+			Code: -1,
+			Msg:  "业务参数解析失败: " + err.Error(),
+		})
+	}
+
+	resp, err := s.biz.ProcessOrder(&req)
+	if err != nil {
+		return c.JSON(entities.ApiResponse{
+			Code: -1,
+			Msg:  err.Error(),
+		})
+	}
+
+	encryptedData, err := s.biz.EncryptResponse(resp)
+	if err != nil {
+		return c.JSON(entities.ApiResponse{
+			Code: -1,
+			Msg:  "响应加密失败: " + err.Error(),
+		})
+	}
+
+	return c.JSON(entities.ApiResponse{
+		Code: 0,
+		Msg:  "请求成功",
+		Data: encryptedData,
+	})
+}
+
+// Query 卡券/直充/微信立减金订单查询接口
+func (s *Service) Query(c *fiber.Ctx) error {
+	decrypted := c.Locals("decryptedBody").([]byte)
+
+	var req entities.QueryRequest
+	if err := json.Unmarshal(decrypted, &req); err != nil {
+		return c.JSON(entities.ApiResponse{
+			Code: -1,
+			Msg:  "业务参数解析失败: " + err.Error(),
+		})
+	}
+
+	resp, err := s.biz.ProcessQuery(&req)
+	if err != nil {
+		return c.JSON(entities.ApiResponse{
+			Code: -1,
+			Msg:  err.Error(),
+		})
+	}
+
+	encryptedData, err := s.biz.EncryptResponse(resp)
+	if err != nil {
+		return c.JSON(entities.ApiResponse{
+			Code: -1,
+			Msg:  "响应加密失败: " + err.Error(),
+		})
+	}
+
+	return c.JSON(entities.ApiResponse{
+		Code: 0,
+		Msg:  "请求成功",
+		Data: encryptedData,
+	})
+}
+
+// WechatRecharge 微信立减金订单充值接口
+func (s *Service) WechatRecharge(c *fiber.Ctx) error {
+	decrypted := c.Locals("decryptedBody").([]byte)
+
+	var req entities.WechatRechargeRequest
+	if err := json.Unmarshal(decrypted, &req); err != nil {
+		return c.JSON(entities.ApiResponse{
+			Code: -1,
+			Msg:  "业务参数解析失败: " + err.Error(),
+		})
+	}
+
+	resp, err := s.biz.ProcessWechatRecharge(&req)
+	if err != nil {
+		return c.JSON(entities.ApiResponse{
+			Code: -1,
+			Msg:  err.Error(),
+		})
+	}
+
+	encryptedData, err := s.biz.EncryptResponse(resp)
+	if err != nil {
+		return c.JSON(entities.ApiResponse{
+			Code: -1,
+			Msg:  "响应加密失败: " + err.Error(),
+		})
+	}
+
+	return c.JSON(entities.ApiResponse{
+		Code: 0,
+		Msg:  "请求成功",
+		Data: encryptedData,
+	})
+}
+
+// Callback 卡券/直充/微信立减金充值结果通知接口
+func (s *Service) Callback(c *fiber.Ctx) error {
+	decrypted := c.Locals("decryptedBody").([]byte)
+
+	var req entities.CallbackRequest
+	if err := json.Unmarshal(decrypted, &req); err != nil {
+		return c.Status(fiber.StatusBadRequest).SendString("参数解析失败")
+	}
+
+	if err := s.biz.ProcessCallback(&req); err != nil {
+		return c.Status(fiber.StatusInternalServerError).SendString(err.Error())
+	}
+
+	return c.SendString("ok")
+}
\ No newline at end of file