diff --git a/pkg/errors/context.go b/pkg/errors/context.go
index 28f653c..3d7beca 100644
--- a/pkg/errors/context.go
+++ b/pkg/errors/context.go
@@ -1,6 +1,8 @@
 package errors
 
 import (
+	"strconv"
+
 	"github.com/gofiber/fiber/v2"
 	"go.uber.org/zap"
 
@@ -44,8 +46,8 @@ func FromFiberContext(c *fiber.Ctx) *ErrorContext {
 
 	// 提取 User ID（如果已认证）
 	if uid := c.Locals(constants.ContextKeyUserID); uid != nil {
-		if userID, ok := uid.(string); ok {
-			ctx.UserID = userID
+		if userID, ok := uid.(uint); ok {
+			ctx.UserID = strconv.FormatUint(uint64(userID), 10)
 		}
 	}
 
diff --git a/pkg/logger/middleware.go b/pkg/logger/middleware.go
index 2a3ec07..79440b7 100644
--- a/pkg/logger/middleware.go
+++ b/pkg/logger/middleware.go
@@ -54,9 +54,11 @@ func Middleware() fiber.Handler {
 		}
 
 		// 获取用户 ID（由 auth 中间件设置）
-		userID := ""
+		var userID uint
 		if uid := c.Locals(constants.ContextKeyUserID); uid != nil {
-			userID = uid.(string)
+			if id, ok := uid.(uint); ok {
+				userID = id
+			}
 		}
 
 		// 获取响应 body
@@ -73,7 +75,7 @@ func Middleware() fiber.Handler {
 			zap.String("request_id", requestID),
 			zap.String("ip", c.IP()),
 			zap.String("user_agent", c.Get("User-Agent")),
-			zap.String(constants.ContextKeyUserID, userID),
+			zap.Uint("user_id", userID),
 			zap.String("request_body", requestBody),
 			zap.String("response_body", responseBody),
 		)