diff --git a/AssetManager.API/Controllers/PortfolioController.cs b/AssetManager.API/Controllers/PortfolioController.cs
index af6537f..915a8e1 100644
--- a/AssetManager.API/Controllers/PortfolioController.cs
+++ b/AssetManager.API/Controllers/PortfolioController.cs
@@ -89,7 +89,7 @@ public class PortfolioController : ControllerBase
             {
                 return BadRequest(new ApiResponse<CreatePortfolioResponse>
                 {
-                    code = StatusCodes.BadRequest,
+                    code = AssetManager.Models.StatusCodes.BadRequest,
                     data = null,
                     message = $"不支持的组合币种: {request.currency}，支持的币种: {string.Join(", ", CurrencyHelper.GetSupportedCurrencies())}"
                 });
@@ -104,7 +104,7 @@ public class PortfolioController : ControllerBase
                     {
                         return BadRequest(new ApiResponse<CreatePortfolioResponse>
                         {
-                            code = StatusCodes.BadRequest,
+                            code = AssetManager.Models.StatusCodes.BadRequest,
                             data = null,
                             message = $"不支持的持仓币种: {stock.currency}（标的: {stock.code}），支持的币种: {string.Join(", ", CurrencyHelper.GetSupportedCurrencies())}"
                         });
@@ -352,7 +352,7 @@ public class PortfolioController : ControllerBase
             {
                 return BadRequest(new ApiResponse<CreateTransactionResponse>
                 {
-                    code = StatusCodes.BadRequest,
+                    code = AssetManager.Models.StatusCodes.BadRequest,
                     data = null,
                     message = $"不支持的交易币种: {request.currency}，支持的币种: {string.Join(", ", CurrencyHelper.GetSupportedCurrencies())}"
                 });
@@ -366,7 +366,7 @@ public class PortfolioController : ControllerBase
                 {
                     return BadRequest(new ApiResponse<CreateTransactionResponse>
                     {
-                        code = StatusCodes.BadRequest,
+                        code = AssetManager.Models.StatusCodes.BadRequest,
                         data = null,
                         message = $"不支持的资产类型: {request.assetType}，支持的类型: {string.Join(", ", validAssetTypes)}"
                     });
diff --git a/AssetManager.API/Controllers/UserController.cs b/AssetManager.API/Controllers/UserController.cs
index 4937b40..a6c0892 100644
--- a/AssetManager.API/Controllers/UserController.cs
+++ b/AssetManager.API/Controllers/UserController.cs
@@ -212,7 +212,7 @@ public class UserController : ControllerBase
             {
                 return BadRequest(new ApiResponse<UpdateUserResponse>
                 {
-                    code = StatusCodes.BadRequest,
+                    code = AssetManager.Models.StatusCodes.BadRequest,
                     data = null,
                     message = $"不支持的币种: {request.DefaultCurrency}，支持的币种: {string.Join(", ", CurrencyHelper.GetSupportedCurrencies())}"
                 });
diff --git a/AssetManager.Models/DTOs/UserDTO.cs b/AssetManager.Models/DTOs/UserDTO.cs
index 09d800a..dbbbf7c 100644
--- a/AssetManager.Models/DTOs/UserDTO.cs
+++ b/AssetManager.Models/DTOs/UserDTO.cs
@@ -26,13 +26,6 @@ public class UserStatsResponse
     public double AverageProfit { get; set; }
 }
 
-public class UpdateUserRequest
-{
-    public string UserName { get; set; }
-    public string Avatar { get; set; }
-    public string Email { get; set; }
-}
-
 public class UpdateUserResponse
 {
     public string Status { get; set; }