diff --git a/AssetManager.API/Controllers/PortfolioController.cs b/AssetManager.API/Controllers/PortfolioController.cs
index 5db6232..609047b 100755
--- a/AssetManager.API/Controllers/PortfolioController.cs
+++ b/AssetManager.API/Controllers/PortfolioController.cs
@@ -171,6 +171,33 @@ public class PortfolioController : ControllerBase
         }
     }
 
+    /// <summary>
+    /// 更新投资组合
+    /// </summary>
+    [HttpPut("{id}")]
+    public async Task<ActionResult<ApiResponse<object>>> UpdatePortfolio(string id, [FromBody] UpdatePortfolioRequest request)
+    {
+        var userId = GetCurrentUserId();
+        var success = await _portfolioFacade.UpdatePortfolioAsync(id, request, userId);
+        
+        if (!success)
+        {
+            return NotFound(new ApiResponse<object>
+            {
+                code = Models.StatusCodes.NotFound,
+                data = null,
+                message = "组合不存在"
+            });
+        }
+        
+        return Ok(new ApiResponse<object>
+        {
+            code = Models.StatusCodes.Success,
+            data = null,
+            message = "更新成功"
+        });
+    }
+
     /// <summary>
     /// 删除投资组合
     /// </summary>
diff --git a/AssetManager.Models/DTOs/PortfolioDTO.cs b/AssetManager.Models/DTOs/PortfolioDTO.cs
index d00cddc..316c7ff 100755
--- a/AssetManager.Models/DTOs/PortfolioDTO.cs
+++ b/AssetManager.Models/DTOs/PortfolioDTO.cs
@@ -11,6 +11,16 @@ public class CreatePortfolioRequest
     public List<StockItem>? Stocks { get; set; }
 }
 
+/// <summary>
+/// 更新投资组合请求
+/// </summary>
+public class UpdatePortfolioRequest
+{
+    public string? Name { get; set; }
+    public string? StrategyId { get; set; }
+    public string? Status { get; set; }
+}
+
 /// <summary>
 /// 股票项
 /// </summary>
diff --git a/AssetManager.Services/IPortfolioFacade.cs b/AssetManager.Services/IPortfolioFacade.cs
index 51f1945..2a02be0 100644
--- a/AssetManager.Services/IPortfolioFacade.cs
+++ b/AssetManager.Services/IPortfolioFacade.cs
@@ -47,6 +47,11 @@ public interface IPortfolioFacade
     /// </summary>
     Task<bool> DeletePortfolioAsync(string portfolioId, string userId);
     
+    /// <summary>
+    /// 更新投资组合
+    /// </summary>
+    Task<bool> UpdatePortfolioAsync(string portfolioId, UpdatePortfolioRequest request, string userId);
+    
     /// <summary>
     /// 创建投资组合（含用户验证和币种校验）
     /// </summary>
diff --git a/AssetManager.Services/IPortfolioService.cs b/AssetManager.Services/IPortfolioService.cs
index 1a7cd05..8660f21 100755
--- a/AssetManager.Services/IPortfolioService.cs
+++ b/AssetManager.Services/IPortfolioService.cs
@@ -6,6 +6,7 @@ public interface IPortfolioService
 {
     CreatePortfolioResponse CreatePortfolio(CreatePortfolioRequest request, string userId);
     Task<CreatePortfolioResponse> CreatePortfolioAsync(CreatePortfolioRequest request, string userId);
+    Task<bool> UpdatePortfolioAsync(string portfolioId, UpdatePortfolioRequest request, string userId);
     List<PortfolioListItem> GetPortfolios(string userId);
     Task<List<PortfolioListItem>> GetPortfolioListAsync(string userId);
     TotalAssetsResponse GetTotalAssets(string userId);
diff --git a/AssetManager.Services/PortfolioFacade.cs b/AssetManager.Services/PortfolioFacade.cs
index 12583de..e97c636 100644
--- a/AssetManager.Services/PortfolioFacade.cs
+++ b/AssetManager.Services/PortfolioFacade.cs
@@ -146,6 +146,12 @@ public class PortfolioFacade : IPortfolioFacade
         return await _portfolioService.DeletePortfolioAsync(portfolioId, userId);
     }
 
+    public async Task<bool> UpdatePortfolioAsync(string portfolioId, UpdatePortfolioRequest request, string userId)
+    {
+        _logger.LogInformation("更新组合: {PortfolioId}", portfolioId);
+        return await _portfolioService.UpdatePortfolioAsync(portfolioId, request, userId);
+    }
+
     /// <summary>
     /// 创建投资组合（含用户验证和币种校验）
     /// </summary>
diff --git a/AssetManager.Services/PortfolioService.cs b/AssetManager.Services/PortfolioService.cs
index 1a7110a..dde1b9e 100755
--- a/AssetManager.Services/PortfolioService.cs
+++ b/AssetManager.Services/PortfolioService.cs
@@ -739,6 +739,40 @@ public class PortfolioService : IPortfolioService
         };
     }
 
+    public async Task<bool> UpdatePortfolioAsync(string portfolioId, UpdatePortfolioRequest request, string userId)
+    {
+        var portfolio = _db.Queryable<Portfolio>()
+            .Where(p => p.Id == portfolioId && p.UserId == userId)
+            .First();
+
+        if (portfolio == null)
+        {
+            return false;
+        }
+
+        // 更新字段
+        if (!string.IsNullOrEmpty(request.Name))
+        {
+            portfolio.Name = request.Name;
+        }
+        
+        // 策略可以为空（解绑策略）
+        portfolio.StrategyId = request.StrategyId;
+        
+        if (!string.IsNullOrEmpty(request.Status))
+        {
+            portfolio.Status = request.Status;
+        }
+        
+        portfolio.UpdatedAt = DateTime.Now;
+        
+        _db.Updateable(portfolio).ExecuteCommand();
+        _logger.LogInformation("更新投资组合: {PortfolioId}, 名称: {Name}, 策略: {StrategyId}", 
+            portfolioId, portfolio.Name, portfolio.StrategyId ?? "无");
+        
+        return true;
+    }
+
     public async Task<bool> DeletePortfolioAsync(string portfolioId, string userId)
     {
         var portfolio = _db.Queryable<Portfolio>()