diff --git a/AssetManager.Infrastructure/Services/OkxMarketService.cs b/AssetManager.Infrastructure/Services/OkxMarketService.cs
index df5a671..b5abcd1 100644
--- a/AssetManager.Infrastructure/Services/OkxMarketService.cs
+++ b/AssetManager.Infrastructure/Services/OkxMarketService.cs
@@ -124,21 +124,21 @@ public class OkxMarketService : IOkxMarketService
 // OKX 响应模型
 internal class OkxTickerResponse
 {
-    public string code { get; set; }
-    public string msg { get; set; }
-    public List<OkxTickerData> data { get; set; }
+    public string? code { get; set; }
+    public string? msg { get; set; }
+    public List<OkxTickerData>? data { get; set; }
 }
 
 internal class OkxTickerData
 {
-    public string instId { get; set; }
-    public string last { get; set; }
-    public string sodUtc0 { get; set; }
+    public string? instId { get; set; }
+    public string? last { get; set; }
+    public string? sodUtc0 { get; set; }
 }
 
 internal class OkxCandlesResponse
 {
-    public string code { get; set; }
-    public string msg { get; set; }
-    public List<string[]> data { get; set; }
+    public string? code { get; set; }
+    public string? msg { get; set; }
+    public List<string[]>? data { get; set; }
 }
diff --git a/AssetManager.Services/PortfolioFacade.cs b/AssetManager.Services/PortfolioFacade.cs
index 0cfcad1..2d5208d 100644
--- a/AssetManager.Services/PortfolioFacade.cs
+++ b/AssetManager.Services/PortfolioFacade.cs
@@ -101,8 +101,8 @@ public class PortfolioFacade : IPortfolioFacade
             return new StrategySignalResponse { Signal = "hold", Reason = "未绑定策略" };
         }
         
-        // 获取策略
-        var strategy = await _strategyService.GetStrategyByIdAsync(portfolio.StrategyId, userId);
+        // 获取策略（同步调用）
+        var strategy = _strategyService.GetStrategyById(portfolio.StrategyId, userId);
         if (strategy == null)
         {
             return new StrategySignalResponse { Signal = "hold", Reason = "策略不存在" };