diff --git a/AssetManager.Services/PortfolioService.cs b/AssetManager.Services/PortfolioService.cs
index 9c8f6a7..bcaf145 100644
--- a/AssetManager.Services/PortfolioService.cs
+++ b/AssetManager.Services/PortfolioService.cs
@@ -214,7 +214,8 @@ public class PortfolioService : IPortfolioService
             .Where(pos => pos.PortfolioId == id)
             .ToList();
 
-        // 获取每个持仓的实时价格并计算
+        // 获取每个持仓的实时价格并转换为组合本位币
+        string targetCurrency = portfolio.Currency ?? "CNY";
         decimal totalPortfolioValue = 0;
         decimal totalCost = 0;
         decimal totalTodayProfit = 0;
@@ -238,9 +239,14 @@ public class PortfolioService : IPortfolioService
             double profitRate = cost > 0 ? (double)(profit / cost * 100) : 0;
             decimal todayProfit = previousClose > 0 ? pos.Shares * (currentPrice - previousClose) : 0;
 
-            totalPortfolioValue += positionValue;
-            totalCost += cost;
-            totalTodayProfit += todayProfit;
+            // 转换为组合本位币
+            decimal positionValueInTarget = await _exchangeRateService.ConvertAmountAsync(positionValue, pos.Currency, targetCurrency);
+            decimal costInTarget = await _exchangeRateService.ConvertAmountAsync(cost, pos.Currency, targetCurrency);
+            decimal todayProfitInTarget = await _exchangeRateService.ConvertAmountAsync(todayProfit, pos.Currency, targetCurrency);
+
+            totalPortfolioValue += positionValueInTarget;
+            totalCost += costInTarget;
+            totalTodayProfit += todayProfitInTarget;
 
             positionItems.Add(new PositionItem
             {
@@ -251,13 +257,13 @@ public class PortfolioService : IPortfolioService
                 amount = (int)pos.Shares,
                 averagePrice = (double)pos.AvgPrice,
                 currentPrice = (double)currentPrice,
-                totalValue = (double)positionValue,
-                profit = (double)profit,
+                totalValue = (double)positionValueInTarget,
+                profit = (double)(positionValueInTarget - costInTarget),
                 profitRate = profitRate,
-                changeAmount = (double)todayProfit,
+                changeAmount = (double)todayProfitInTarget,
                 ratio = 0, // 后面统一计算比例
                 deviationRatio = 0, // 后续实现
-                currency = pos.Currency
+                currency = targetCurrency
             });
         }
 
@@ -274,7 +280,7 @@ public class PortfolioService : IPortfolioService
         {
             id = portfolio.Id,
             name = portfolio.Name,
-            currency = portfolio.Currency,
+            currency = targetCurrency,
             status = portfolio.Status,
             strategy = new StrategyInfo
             {
@@ -287,7 +293,7 @@ public class PortfolioService : IPortfolioService
             todayProfit = (double)totalTodayProfit,
             historicalChange = totalReturnRate,
             dailyVolatility = 0, // 后续实现
-            todayProfitCurrency = portfolio.Currency,
+            todayProfitCurrency = targetCurrency,
             logicModel = "HFEA 风险平价逻辑",
             logicModelStatus = "监控中",
             logicModelDescription = "目标权重 季度调仓",