diff --git a/AssetManager.Services/PortfolioService.cs b/AssetManager.Services/PortfolioService.cs
index 95f553f..05ecfca 100644
--- a/AssetManager.Services/PortfolioService.cs
+++ b/AssetManager.Services/PortfolioService.cs
@@ -199,6 +199,7 @@ public class PortfolioService : IPortfolioService
         }
 
         string targetCurrency = user.DefaultCurrency ?? "CNY";
+        _logger.LogInformation("用户 {UserId} 默认本位币: {Currency}", userId, targetCurrency);
         decimal totalValueInTargetCurrency = 0;
         decimal totalCostInTargetCurrency = 0;
         decimal totalTodayProfitInTargetCurrency = 0;
@@ -247,6 +248,10 @@ public class PortfolioService : IPortfolioService
                 decimal currentInTarget = await _exchangeRateService.ConvertAmountAsync(currentPositionValue, pos.Currency, targetCurrency);
                 decimal costInTarget = await _exchangeRateService.ConvertAmountAsync(costPositionValue, pos.Currency, targetCurrency);
                 decimal todayProfitInTarget = await _exchangeRateService.ConvertAmountAsync(todayProfit, pos.Currency, targetCurrency);
+                
+                _logger.LogInformation("标的 {StockCode} 换算: {Amount} {From} → {Converted} {To}，汇率: {Rate}", 
+                    pos.StockCode, currentPositionValue, pos.Currency, currentInTarget, targetCurrency, 
+                    currentPositionValue > 0 ? currentInTarget / currentPositionValue : 0);
 
                 totalValueInTargetCurrency += currentInTarget;
                 totalCostInTargetCurrency += costInTarget;