diff --git a/AssetManager.Infrastructure/Services/TencentMarketService.cs b/AssetManager.Infrastructure/Services/TencentMarketService.cs
index c8d2d80..f05a9c9 100644
--- a/AssetManager.Infrastructure/Services/TencentMarketService.cs
+++ b/AssetManager.Infrastructure/Services/TencentMarketService.cs
@@ -45,23 +45,38 @@ public class TencentMarketService : ITencentMarketService
 
     public async Task<MarketPriceResponse> GetStockPriceAsync(string symbol)
     {
-        _logger.LogInformation("腾讯财经获取股票价格: {Symbol}", symbol);
+        _logger.LogInformation("[腾讯财经] 获取股票价格: {Symbol}", symbol);
 
         // 腾讯财经美股接口：前缀us，大写代码
         var url = $"http://qt.gtimg.cn/q=us{symbol.ToUpper()}";
+        _logger.LogInformation("[腾讯财经] 请求URL: {Url}", url);
+        
         var responseBytes = await _httpClient.GetByteArrayAsync(url);
         var response = Encoding.GetEncoding("GBK").GetString(responseBytes);
+        _logger.LogDebug("[腾讯财经] 原始响应: {Response}", response);
 
-        if (string.IsNullOrEmpty(response) || !response.Contains("~"))
+        if (string.IsNullOrEmpty(response))
         {
-            throw new Exception($"腾讯财经接口返回无效数据，标的: {symbol}");
+            throw new Exception($"腾讯财经接口返回空数据，标的: {symbol}");
         }
 
-        // 解析返回数据
-        var parts = response.Split('"')[1].Split('~');
-        if (parts.Length < 36)
+        // 解析返回数据：v_usUPRO="200~..." 格式
+        var quoteStart = response.IndexOf('"');
+        var quoteEnd = response.LastIndexOf('"');
+        
+        if (quoteStart < 0 || quoteEnd <= quoteStart)
         {
-            throw new Exception($"腾讯财经返回字段不足，标的: {symbol}");
+            throw new Exception($"腾讯财经接口返回格式错误（无引号），标的: {symbol}，响应: {response.Substring(0, Math.Min(200, response.Length))}");
+        }
+
+        var dataPart = response.Substring(quoteStart + 1, quoteEnd - quoteStart - 1);
+        var parts = dataPart.Split('~');
+        
+        _logger.LogDebug("[腾讯财经] 字段数量: {Count}, parts[3]={Price}, parts[4]={PrevClose}", parts.Length, parts.Length > 3 ? parts[3] : "N/A", parts.Length > 4 ? parts[4] : "N/A");
+        
+        if (parts.Length < 5)
+        {
+            throw new Exception($"腾讯财经返回字段不足，标的: {symbol}，字段数: {parts.Length}");
         }
 
         // 提取字段：[3]=最新价 [4]=昨收价
@@ -75,7 +90,7 @@ public class TencentMarketService : ITencentMarketService
             prevClose = currentPrice; // 解析失败用当前价当昨收
         }
         
-        _logger.LogDebug("腾讯财经接口返回 {Symbol}：最新价 {CurrentPrice}，昨收价 {PrevClose}", 
+        _logger.LogInformation("[腾讯财经] 成功: {Symbol} 最新价={CurrentPrice}，昨收价={PrevClose}", 
             symbol, currentPrice, prevClose);
 
         return new MarketPriceResponse