diff --git a/AssetManager.API/Program.cs b/AssetManager.API/Program.cs
index d6c98da..b5dd482 100644
--- a/AssetManager.API/Program.cs
+++ b/AssetManager.API/Program.cs
@@ -68,6 +68,7 @@ builder.Services.AddScoped<AssetManager.Services.Services.WechatService>();
 builder.Services.AddScoped<AssetManager.Services.Services.JwtService>();
 builder.Services.AddScoped<AssetManager.Services.IPortfolioService, AssetManager.Services.PortfolioService>();
 builder.Services.AddScoped<AssetManager.Services.IStrategyService, AssetManager.Services.StrategyService>();
+builder.Services.AddScoped<AssetManager.Infrastructure.Services.IMarketDataService, AssetManager.Infrastructure.Services.MarketDataService>();
 
 builder.Logging.ClearProviders();
 builder.Logging.AddConsole();
diff --git a/AssetManager.Infrastructure/AssetManager.Infrastructure.csproj b/AssetManager.Infrastructure/AssetManager.Infrastructure.csproj
index e9b146f..cd480e1 100644
--- a/AssetManager.Infrastructure/AssetManager.Infrastructure.csproj
+++ b/AssetManager.Infrastructure/AssetManager.Infrastructure.csproj
@@ -4,6 +4,11 @@
     <ProjectReference Include="..\AssetManager.Models\AssetManager.Models.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Alpaca.Markets" Version="7.2.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="8.0.0" />
+  </ItemGroup>
+
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
diff --git a/AssetManager.Infrastructure/Services/IMarketDataService.cs b/AssetManager.Infrastructure/Services/IMarketDataService.cs
new file mode 100644
index 0000000..4681220
--- /dev/null
+++ b/AssetManager.Infrastructure/Services/IMarketDataService.cs
@@ -0,0 +1,41 @@
+using AssetManager.Models.DTOs;
+
+namespace AssetManager.Infrastructure.Services;
+
+/// <summary>
+/// 市场数据服务接口
+/// </summary>
+public interface IMarketDataService
+{
+    /// <summary>
+    /// 获取股票实时价格
+    /// </summary>
+    /// <param name="symbol">股票代码</param>
+    /// <returns>股票价格信息</returns>
+    Task<MarketPriceResponse> GetStockPriceAsync(string symbol);
+
+    /// <summary>
+    /// 获取加密货币实时价格
+    /// </summary>
+    /// <param name="symbol">加密货币代码</param>
+    /// <returns>加密货币价格信息</returns>
+    Task<MarketPriceResponse> GetCryptoPriceAsync(string symbol);
+
+    /// <summary>
+    /// 获取股票历史数据
+    /// </summary>
+    /// <param name="symbol">股票代码</param>
+    /// <param name="timeframe">时间周期</param>
+    /// <param name="limit">数据点数量</param>
+    /// <returns>历史数据列表</returns>
+    Task<List<MarketDataResponse>> GetStockHistoricalDataAsync(string symbol, string timeframe, int limit);
+
+    /// <summary>
+    /// 获取加密货币历史数据
+    /// </summary>
+    /// <param name="symbol">加密货币代码</param>
+    /// <param name="timeframe">时间周期</param>
+    /// <param name="limit">数据点数量</param>
+    /// <returns>历史数据列表</returns>
+    Task<List<MarketDataResponse>> GetCryptoHistoricalDataAsync(string symbol, string timeframe, int limit);
+}
\ No newline at end of file
diff --git a/AssetManager.Infrastructure/Services/MarketDataService.cs b/AssetManager.Infrastructure/Services/MarketDataService.cs
new file mode 100644
index 0000000..132dbeb
--- /dev/null
+++ b/AssetManager.Infrastructure/Services/MarketDataService.cs
@@ -0,0 +1,225 @@
+using Alpaca.Markets;
+using AssetManager.Models.DTOs;
+using Microsoft.Extensions.Logging;
+
+namespace AssetManager.Infrastructure.Services;
+
+/// <summary>
+/// 市场数据服务实现
+/// </summary>
+public class MarketDataService : IMarketDataService
+{
+    private readonly ILogger<MarketDataService> _logger;
+    private readonly IAlpacaDataClient _dataClient;
+
+    /// <summary>
+    /// 构造函数
+    /// </summary>
+    /// <param name="logger">日志记录器</param>
+    public MarketDataService(ILogger<MarketDataService> logger)
+    {
+        _logger = logger;
+
+        // 初始化 Alpaca 客户端 (7.2 版本)
+        var secretKey = new SecretKey("YOUR_API_KEY", "YOUR_SECRET_KEY");
+
+        // 使用 Paper Trading 环境进行测试，生产环境请使用 Environments.Live
+        _dataClient = Environments.Paper.GetAlpacaDataClient(secretKey);
+    }
+
+    /// <summary>
+    /// 获取股票实时价格
+    /// </summary>
+    /// <param name="symbol">股票代码</param>
+    /// <returns>股票价格信息</returns>
+    public async Task<MarketPriceResponse> GetStockPriceAsync(string symbol)
+    {
+        try
+        {
+            _logger.LogInformation($"Requesting stock price for symbol: {symbol}");
+
+            var request = new LatestMarketDataRequest(symbol);
+            var latestTrade = await _dataClient.GetLatestTradeAsync(request);
+
+            return new MarketPriceResponse
+            {
+                Symbol = symbol,
+                Price = latestTrade.Price,
+                Timestamp = latestTrade.TimestampUtc,
+                AssetType = "Stock"
+            };
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, $"Error getting stock price for {symbol}");
+            throw;
+        }
+    }
+
+    /// <summary>
+    /// 获取加密货币实时价格
+    /// </summary>
+    /// <param name="symbol">加密货币代码</param>
+    /// <returns>加密货币价格信息</returns>
+    public async Task<MarketPriceResponse> GetCryptoPriceAsync(string symbol)
+    {
+        try
+        {
+            _logger.LogInformation($"Requesting crypto price for symbol: {symbol}");
+
+            var request = new LatestMarketDataRequest(symbol);
+            var latestTrade = await _dataClient.GetLatestTradeAsync(request);
+
+            return new MarketPriceResponse
+            {
+                Symbol = symbol,
+                Price = latestTrade.Price,
+                Timestamp = latestTrade.TimestampUtc,
+                AssetType = "Crypto"
+            };
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, $"Error getting crypto price for {symbol}");
+            throw;
+        }
+    }
+
+    /// <summary>
+    /// 获取股票历史数据
+    /// </summary>
+    /// <param name="symbol">股票代码</param>
+    /// <param name="timeframe">时间周期</param>
+    /// <param name="limit">数据点数量</param>
+    /// <returns>历史数据列表</returns>
+    public async Task<List<MarketDataResponse>> GetStockHistoricalDataAsync(string symbol, string timeframe, int limit)
+    {
+        try
+        {
+            _logger.LogInformation($"Requesting stock historical data for symbol: {symbol}, timeframe: {timeframe}, limit: {limit}");
+
+            var barTimeFrame = GetBarTimeFrame(timeframe);
+            var endDate = DateTime.UtcNow;
+            var startDate = CalculateStartDate(endDate, timeframe, limit);
+
+            var request = new HistoricalBarsRequest(symbol, startDate, endDate, barTimeFrame);
+            var barsPage = await _dataClient.GetHistoricalBarsAsync(request);
+
+            var result = new List<MarketDataResponse>();
+            foreach (var kvp in barsPage.Items)
+            {
+                foreach (var bar in kvp.Value)
+                {
+                    result.Add(new MarketDataResponse
+                    {
+                        Symbol = symbol,
+                        Open = bar.Open,
+                        High = bar.High,
+                        Low = bar.Low,
+                        Close = bar.Close,
+                        Volume = bar.Volume,
+                        Timestamp = bar.TimeUtc,
+                        AssetType = "Stock"
+                    });
+                }
+            }
+
+            return result;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, $"Error getting stock historical data for {symbol}");
+            throw;
+        }
+    }
+
+    /// <summary>
+    /// 获取加密货币历史数据
+    /// </summary>
+    /// <param name="symbol">加密货币代码</param>
+    /// <param name="timeframe">时间周期</param>
+    /// <param name="limit">数据点数量</param>
+    /// <returns>历史数据列表</returns>
+    public async Task<List<MarketDataResponse>> GetCryptoHistoricalDataAsync(string symbol, string timeframe, int limit)
+    {
+        try
+        {
+            _logger.LogInformation($"Requesting crypto historical data for symbol: {symbol}, timeframe: {timeframe}, limit: {limit}");
+
+            var barTimeFrame = GetBarTimeFrame(timeframe);
+            var endDate = DateTime.UtcNow;
+            var startDate = CalculateStartDate(endDate, timeframe, limit);
+
+            var request = new HistoricalBarsRequest(symbol, startDate, endDate, barTimeFrame);
+            var barsPage = await _dataClient.GetHistoricalBarsAsync(request);
+
+            var result = new List<MarketDataResponse>();
+            foreach (var kvp in barsPage.Items)
+            {
+                foreach (var bar in kvp.Value)
+                {
+                    result.Add(new MarketDataResponse
+                    {
+                        Symbol = symbol,
+                        Open = bar.Open,
+                        High = bar.High,
+                        Low = bar.Low,
+                        Close = bar.Close,
+                        Volume = bar.Volume,
+                        Timestamp = bar.TimeUtc,
+                        AssetType = "Crypto"
+                    });
+                }
+            }
+
+            return result;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, $"Error getting crypto historical data for {symbol}");
+            throw;
+        }
+    }
+
+    /// <summary>
+    /// 转换时间周期
+    /// </summary>
+    /// <param name="timeframe">时间周期字符串</param>
+    /// <returns>BarTimeFrame 对象</returns>
+    private BarTimeFrame GetBarTimeFrame(string timeframe)
+    {
+        return timeframe.ToLower() switch
+        {
+            "1min" => BarTimeFrame.Minute,
+            "5min" => BarTimeFrame.Minute,
+            "15min" => BarTimeFrame.Minute,
+            "1h" => BarTimeFrame.Hour,
+            "1d" => BarTimeFrame.Day,
+            "1w" => BarTimeFrame.Week,
+            "1m" => BarTimeFrame.Month,
+            _ => BarTimeFrame.Day
+        };
+    }
+
+    /// <summary>
+    /// 计算开始日期
+    /// </summary>
+    /// <param name="endDate">结束日期</param>
+    /// <param name="timeframe">时间周期</param>
+    /// <param name="limit">数据点数量</param>
+    /// <returns>开始日期</returns>
+    private DateTime CalculateStartDate(DateTime endDate, string timeframe, int limit)
+    {
+        return timeframe.ToLower() switch
+        {
+            "1min" => endDate.AddMinutes(-limit),
+            "5min" => endDate.AddMinutes(-limit * 5),
+            "15min" => endDate.AddMinutes(-limit * 15),
+            "1h" => endDate.AddHours(-limit),
+            "1d" => endDate.AddDays(-limit),
+            "1w" => endDate.AddDays(-limit * 7),
+            "1m" => endDate.AddMonths(-limit),
+            _ => endDate.AddDays(-limit)
+        };
+    }
+}
\ No newline at end of file
diff --git a/AssetManager.Models/DTOs/MarketDTO.cs b/AssetManager.Models/DTOs/MarketDTO.cs
new file mode 100644
index 0000000..413fd32
--- /dev/null
+++ b/AssetManager.Models/DTOs/MarketDTO.cs
@@ -0,0 +1,73 @@
+namespace AssetManager.Models.DTOs;
+
+/// <summary>
+/// 市场价格响应
+/// </summary>
+public class MarketPriceResponse
+{
+    /// <summary>
+    /// 标的代码
+    /// </summary>
+    public string Symbol { get; set; }
+
+    /// <summary>
+    /// 价格
+    /// </summary>
+    public decimal Price { get; set; }
+
+    /// <summary>
+    /// 时间戳
+    /// </summary>
+    public DateTime Timestamp { get; set; }
+
+    /// <summary>
+    /// 资产类型
+    /// </summary>
+    public string AssetType { get; set; }
+}
+
+/// <summary>
+/// 市场数据响应
+/// </summary>
+public class MarketDataResponse
+{
+    /// <summary>
+    /// 标的代码
+    /// </summary>
+    public string Symbol { get; set; }
+
+    /// <summary>
+    /// 时间戳
+    /// </summary>
+    public DateTime Timestamp { get; set; }
+
+    /// <summary>
+    /// 开盘价
+    /// </summary>
+    public decimal Open { get; set; }
+
+    /// <summary>
+    /// 最高价
+    /// </summary>
+    public decimal High { get; set; }
+
+    /// <summary>
+    /// 最低价
+    /// </summary>
+    public decimal Low { get; set; }
+
+    /// <summary>
+    /// 收盘价
+    /// </summary>
+    public decimal Close { get; set; }
+
+    /// <summary>
+    /// 成交量
+    /// </summary>
+    public decimal Volume { get; set; }
+
+    /// <summary>
+    /// 资产类型
+    /// </summary>
+    public string AssetType { get; set; }
+}
\ No newline at end of file