diff --git a/backend/app/http/super/v1/auth/dto/auth.go b/backend/app/http/super/v1/auth/dto/auth.go
index 8e53a90..667e9bf 100644
--- a/backend/app/http/super/v1/auth/dto/auth.go
+++ b/backend/app/http/super/v1/auth/dto/auth.go
@@ -13,7 +13,7 @@ type LoginResponse struct {
 }
 
 type User struct {
-	ID                 string        `json:"id"`
+	ID                 int64         `json:"id"`
 	Phone              string        `json:"phone"`
 	Nickname           string        `json:"nickname"`
 	Avatar             string        `json:"avatar"`
diff --git a/backend/app/http/v1/auth/dto/auth.go b/backend/app/http/v1/auth/dto/auth.go
index 3f3bef5..96c3390 100644
--- a/backend/app/http/v1/auth/dto/auth.go
+++ b/backend/app/http/v1/auth/dto/auth.go
@@ -17,7 +17,7 @@ type LoginResponse struct {
 }
 
 type User struct {
-	ID                 string        `json:"id"`
+	ID                 int64         `json:"id"`
 	Phone              string        `json:"phone"`
 	Nickname           string        `json:"nickname"`
 	Avatar             string        `json:"avatar"`
diff --git a/backend/app/http/v1/content.go b/backend/app/http/v1/content.go
index 512b827..25e92b8 100644
--- a/backend/app/http/v1/content.go
+++ b/backend/app/http/v1/content.go
@@ -22,7 +22,7 @@ type Content struct{}
 // @Produce json
 // @Param keyword query string false "Search keyword"
 // @Param genre query string false "Genre"
-// @Param tenantId query string false "Filter by creator"
+// @Param tenantId query int64 false "Filter by creator"
 // @Param sort query string false "Sort order" Enums(latest, hot, price_asc)
 // @Param page query int false "Page number"
 // @Success 200 {object} requests.Pager{items=[]dto.ContentItem}
diff --git a/backend/app/http/v1/dto/user.go b/backend/app/http/v1/dto/user.go
index d0731cd..6d5e574 100644
--- a/backend/app/http/v1/dto/user.go
+++ b/backend/app/http/v1/dto/user.go
@@ -55,7 +55,7 @@ type RechargeResponse struct {
 	// PayParams 支付参数（透传给前端）。
 	PayParams string `json:"pay_params"`
 	// OrderID 充值订单ID。
-	OrderID string `json:"order_id"`
+	OrderID int64 `json:"order_id"`
 }
 
 type Order struct {
diff --git a/backend/app/services/wallet.go b/backend/app/services/wallet.go
index a61da93..9d17f49 100644
--- a/backend/app/services/wallet.go
+++ b/backend/app/services/wallet.go
@@ -3,7 +3,6 @@ package services
 import (
 	"context"
 	"errors"
-	"strconv"
 	"time"
 
 	"quyun/v2/app/errorx"
@@ -112,6 +111,6 @@ func (s *wallet) Recharge(
 	// Mock Pay Params
 	return &user_dto.RechargeResponse{
 		PayParams: "mock_paid_success",
-		OrderID:   strconv.FormatInt(order.ID, 10),
+		OrderID:   order.ID,
 	}, nil
 }