diff --git a/QuestionLibraryMQConsumer/Configuration/AliyunOSSOptions.cs b/QuestionLibraryMQConsumer/Configuration/AliyunOSSOptions.cs
new file mode 100644
index 0000000..aaf2664
--- /dev/null
+++ b/QuestionLibraryMQConsumer/Configuration/AliyunOSSOptions.cs
@@ -0,0 +1,17 @@
+namespace QuestionLibraryMQConsumer.Configuration;
+
+public class AliyunOSSOptions
+{
+    public const string SectionName = "AliyunOSSConfigs";
+    
+    public string AccessKeyID { get; set; } = string.Empty;
+    public string AccessKeySecret { get; set; } = string.Empty;
+    public string VodBucketName { get; set; } = string.Empty;
+    public string BucketName { get; set; } = string.Empty;
+    public string Region { get; set; } = string.Empty;
+    public string RoleArn { get; set; } = string.Empty;
+    public int DurationSeconds { get; set; }
+    public string Endpoint { get; set; } = string.Empty;
+    public string ProjectName { get; set; } = string.Empty;
+    public string Domain { get; set; } = string.Empty;
+}
diff --git a/QuestionLibraryMQConsumer/Entities/Book.cs b/QuestionLibraryMQConsumer/Entities/Book.cs
index b41c16d..48d5b7f 100644
--- a/QuestionLibraryMQConsumer/Entities/Book.cs
+++ b/QuestionLibraryMQConsumer/Entities/Book.cs
@@ -194,7 +194,7 @@ namespace QuestionLibraryMQConsumer.Entities
         /// Default:
         /// Nullable:True
         /// </summary>           
-        [SugarColumn(ColumnName = "source")]
-        public string Source { get; set; }
+        [SugarColumn(ColumnName = "source_id")]
+        public long SourceId { get; set; }
     }
 }
diff --git a/QuestionLibraryMQConsumer/Entities/OtherSystem.cs b/QuestionLibraryMQConsumer/Entities/OtherSystem.cs
new file mode 100644
index 0000000..5c5f1b6
--- /dev/null
+++ b/QuestionLibraryMQConsumer/Entities/OtherSystem.cs
@@ -0,0 +1,50 @@
+using SqlSugar;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace QuestionLibraryMQConsumer.Entities
+{
+    ///<summary>
+    ///其他系统
+    ///</summary>
+    [SugarTable("other_system")]
+    public partial class OtherSystem : SqlSugarBaseEntity
+    {
+        /// <summary>
+        /// Desc:主键id
+        /// Default:
+        /// Nullable:False
+        /// </summary>           
+        [SugarColumn(IsPrimaryKey = true, ColumnName = "id")]
+        public long Id { get; set; }
+
+        /// <summary>
+        /// Desc:Code
+        /// Default:
+        /// Nullable:True
+        /// </summary>           
+        [SugarColumn(ColumnName = "code")]
+        public string Code { get; set; }
+
+        /// <summary>
+        /// Desc:请求域名
+        /// Default:
+        /// Nullable:False
+        /// </summary>           
+        [SugarColumn(ColumnName = "domain")]
+        public string Domain { get; set; } = string.Empty;
+
+
+        /// <summary>
+        /// Desc:桶名称
+        /// Default:
+        /// Nullable:False
+        /// </summary>           
+        [SugarColumn(ColumnName = "bucket_name")]
+        public string BucketName { get; set; } = string.Empty;
+
+    }
+}
diff --git a/QuestionLibraryMQConsumer/Extensions/ServiceCollectionExtensions.cs b/QuestionLibraryMQConsumer/Extensions/ServiceCollectionExtensions.cs
index 7f8428f..1db864c 100644
--- a/QuestionLibraryMQConsumer/Extensions/ServiceCollectionExtensions.cs
+++ b/QuestionLibraryMQConsumer/Extensions/ServiceCollectionExtensions.cs
@@ -4,6 +4,7 @@ using QuestionLibraryMQConsumer.Configuration;
 using QuestionLibraryMQConsumer.Consumers;
 using QuestionLibraryMQConsumer.Data;
 using QuestionLibraryMQConsumer.Handlers;
+using QuestionLibraryMQConsumer.Services;
 
 namespace QuestionLibraryMQConsumer.Extensions;
 
@@ -19,6 +20,9 @@ public static class ServiceCollectionExtensions
         var connectionString = configuration.GetConnectionString("zybDb") ?? throw new InvalidOperationException("Connection string 'zybDb' is not configured");
         services.AddSingleton<QuestionLibraryDb>(new QuestionLibraryDb(connectionString));
 
+        services.Configure<AliyunOSSOptions>(configuration.GetSection(AliyunOSSOptions.SectionName));
+        services.AddSingleton<IOssService, OssService>();
+
         services.AddSingleton<MessageHandlerRegistry>();
         
         services.AddTransient<IMessageHandler, BookCreatedHandler>();
diff --git a/QuestionLibraryMQConsumer/Handlers/BookCreatedHandler.cs b/QuestionLibraryMQConsumer/Handlers/BookCreatedHandler.cs
index 3da4236..7bdd759 100644
--- a/QuestionLibraryMQConsumer/Handlers/BookCreatedHandler.cs
+++ b/QuestionLibraryMQConsumer/Handlers/BookCreatedHandler.cs
@@ -1,6 +1,7 @@
 using QuestionLibraryMQConsumer.Data;
 using QuestionLibraryMQConsumer.Entities;
 using QuestionLibraryMQConsumer.Models;
+using QuestionLibraryMQConsumer.Services;
 using RabbitMQ.Client;
 using System;
 using System.Collections.Generic;
@@ -20,6 +21,7 @@ namespace QuestionLibraryMQConsumer.Handlers
 
         private readonly ILogger<BookCreatedHandler> _logger;
         private readonly QuestionLibraryDb _db;
+        private readonly IOssService _ossService;
 
         public string RoutingKey => "questionLibrary.book.created";
         public Type MessageType => typeof(BookCreatedMessage);
@@ -27,16 +29,18 @@ namespace QuestionLibraryMQConsumer.Handlers
 
         public BookCreatedHandler(
             ILogger<BookCreatedHandler> logger,
-            QuestionLibraryDb db)
+            QuestionLibraryDb db,
+            IOssService ossService)
         {
             _logger = logger;
             _db = db;
+            _ossService = ossService;
         }
 
         public async Task HandleJsonAsync(string messageJson, CancellationToken cancellationToken)
         {
-            _logger.LogInformation("[Handler入口] HandleJsonAsync被调用, messageJson长度: {Length}", messageJson?.Length ?? 0);
-            
+            _logger.LogInformation("[Handler入口] HandleJsonAsync被调用,messageJson长度:{msg} messageJson长度: {Length}", messageJson, messageJson?.Length ?? 0);
+
             var message = JsonSerializer.Deserialize<BookCreatedMessage>(messageJson, _jsonOptions);
 
             if (message == null)
@@ -63,6 +67,48 @@ namespace QuestionLibraryMQConsumer.Handlers
                 return;
             }
 
+            // 查询外部系统配置获取源bucket信息
+            var otherSystem = await _db.Db.Queryable<OtherSystem>()
+                .FirstAsync(s => s.Id == message.SourceId);
+
+            string pdfUrl = message.PdfUrl ?? string.Empty;
+            string coverUrl = message.CoverUrl ?? string.Empty;
+            string backCoverUrl = message.BackCoverUrl ?? string.Empty;
+
+            // 如果找到外部系统配置，执行OSS跨bucket复制
+            if (otherSystem != null && !string.IsNullOrEmpty(otherSystem.BucketName) && !string.IsNullOrEmpty(otherSystem.Domain))
+            {
+                _logger.LogInformation("找到外部系统配置 SourceId: {SourceId}, Bucket: {Bucket}, Domain: {Domain}",
+                    message.SourceId, otherSystem.BucketName, otherSystem.Domain);
+
+                // 并行复制所有URL
+                var copyTasks = new List<Task>();
+
+                if (!string.IsNullOrEmpty(pdfUrl))
+                {
+                    copyTasks.Add(CopyUrlAsync("PdfUrl", pdfUrl, otherSystem, newUrl => pdfUrl = newUrl, cancellationToken));
+                }
+
+                if (!string.IsNullOrEmpty(coverUrl))
+                {
+                    copyTasks.Add(CopyUrlAsync("CoverUrl", coverUrl, otherSystem, newUrl => coverUrl = newUrl, cancellationToken));
+                }
+
+                if (!string.IsNullOrEmpty(backCoverUrl))
+                {
+                    copyTasks.Add(CopyUrlAsync("BackCoverUrl", backCoverUrl, otherSystem, newUrl => backCoverUrl = newUrl, cancellationToken));
+                }
+
+                if (copyTasks.Count > 0)
+                {
+                    await Task.WhenAll(copyTasks);
+                }
+            }
+            else
+            {
+                _logger.LogWarning("未找到外部系统配置 SourceId: {SourceId}，使用原始URL", message.SourceId);
+            }
+
             var book = new Book
             {
                 Id = message.BookId,
@@ -70,12 +116,12 @@ namespace QuestionLibraryMQConsumer.Handlers
                 Title = message.Subtitle,
                 Width = message.PaperWidth,
                 Height = message.PaperHeight,
-                Cover = message.CoverUrl,
-                PdfUrl = message.PdfUrl,
-                BackCover = message.BackCoverUrl,
+                Cover = coverUrl,
+                PdfUrl = pdfUrl,
+                BackCover = backCoverUrl,
                 CreatedTime = DateTime.UtcNow,
                 UpdatedTime = DateTime.UtcNow,
-                Source = message.Source,
+                SourceId = message.SourceId,
                 Status = (int)BookStatusEnum.MissCatalog
             };
 
@@ -84,6 +130,21 @@ namespace QuestionLibraryMQConsumer.Handlers
             _logger.LogInformation("书籍 {BookId} 创建成功", message.BookId);
         }
 
+        private async Task CopyUrlAsync(string fieldName, string originalPath, OtherSystem otherSystem, Action<string> setNewPath, CancellationToken cancellationToken)
+        {
+            try
+            {
+                var newPath = await _ossService.CopyToOwnBucketAsync(originalPath, otherSystem.BucketName, cancellationToken);
+                setNewPath(newPath);
+                _logger.LogInformation("{FieldName} OSS复制成功: {OriginalPath} -> {NewPath}", fieldName, originalPath, newPath);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "{FieldName} OSS复制失败，使用原始路径: {OriginalPath}", fieldName, originalPath);
+                // 保持原始路径不变
+            }
+        }
+
         public async Task HandleWithManualAckAsync(string messageJson, IChannel channel, ulong deliveryTag, CancellationToken cancellationToken)
         {
             var message = JsonSerializer.Deserialize<BookCreatedMessage>(messageJson, _jsonOptions);
diff --git a/QuestionLibraryMQConsumer/Models/BookCreatedMessage.cs b/QuestionLibraryMQConsumer/Models/BookCreatedMessage.cs
index 0af7106..ea52483 100644
--- a/QuestionLibraryMQConsumer/Models/BookCreatedMessage.cs
+++ b/QuestionLibraryMQConsumer/Models/BookCreatedMessage.cs
@@ -3,7 +3,7 @@ namespace QuestionLibraryMQConsumer.Models;
 public class BookCreatedMessage
 {
     /// <summary>
-    /// ��ϢId
+    /// 消息Id
     /// </summary>
     public string MessageId { get; set; } = string.Empty;
     /// <summary>
@@ -15,31 +15,31 @@ public class BookCreatedMessage
     /// </summary>
     public string BookName { get; set; } = string.Empty;
     /// <summary>
-    /// ������
+    /// 副标题
     /// </summary>
     public string Subtitle { get; set; } = string.Empty;
     /// <summary>
-    /// ֽ�ſ���
+    /// 纸张宽度
     /// </summary>
     public float PaperWidth { get; set; }
     /// <summary>
-    /// ֽ�Ÿ߶�
+    /// 纸张高度
     /// </summary>
     public float PaperHeight { get; set; }
     /// <summary>
-    /// ����
+    /// 封面
     /// </summary>
     public string? CoverUrl { get; set; }
     /// <summary>
-    /// ���
+    /// 封底
     /// </summary>
     public string? BackCoverUrl { get; set; }
     /// <summary>
-    /// �鼮PDF
+    /// 书籍PDF
     /// </summary>
     public string? PdfUrl {  get; set; }
     /// <summary>
-    /// ԴʶжϻشMQϢַ
+    /// 来源识别判断回MQ消息地址
     /// </summary>
-    public string? Source { get; set; }
+    public long SourceId { get; set; }
 }
diff --git a/QuestionLibraryMQConsumer/QuestionLibraryMQConsumer.csproj b/QuestionLibraryMQConsumer/QuestionLibraryMQConsumer.csproj
index e814550..5a000c0 100644
--- a/QuestionLibraryMQConsumer/QuestionLibraryMQConsumer.csproj
+++ b/QuestionLibraryMQConsumer/QuestionLibraryMQConsumer.csproj
@@ -12,5 +12,6 @@
     <PackageReference Include="RabbitMQ.Client" Version="7.2.1" />
     <PackageReference Include="Serilog.AspNetCore" Version="10.0.0" />
     <PackageReference Include="SqlSugarCore" Version="5.1.4.214" />
+    <PackageReference Include="Aliyun.OSS.SDK.NetCore" Version="2.14.1" />
   </ItemGroup>
 </Project>
diff --git a/QuestionLibraryMQConsumer/Services/IOssService.cs b/QuestionLibraryMQConsumer/Services/IOssService.cs
new file mode 100644
index 0000000..9e9df8f
--- /dev/null
+++ b/QuestionLibraryMQConsumer/Services/IOssService.cs
@@ -0,0 +1,13 @@
+namespace QuestionLibraryMQConsumer.Services;
+
+public interface IOssService
+{
+    /// <summary>
+    /// 将文件从外部bucket复制到自己的bucket
+    /// </summary>
+    /// <param name="sourcePath">源文件相对路径（如 book/807248715010117/book.pdf）</param>
+    /// <param name="sourceBucket">源bucket名称</param>
+    /// <param name="cancellationToken">取消令牌</param>
+    /// <returns>复制后的新URL</returns>
+    Task<string> CopyToOwnBucketAsync(string sourcePath, string sourceBucket, CancellationToken cancellationToken = default);
+}
diff --git a/QuestionLibraryMQConsumer/Services/OssService.cs b/QuestionLibraryMQConsumer/Services/OssService.cs
new file mode 100644
index 0000000..55a7f81
--- /dev/null
+++ b/QuestionLibraryMQConsumer/Services/OssService.cs
@@ -0,0 +1,51 @@
+using Aliyun.OSS;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+using QuestionLibraryMQConsumer.Configuration;
+
+namespace QuestionLibraryMQConsumer.Services;
+
+public class OssService : IOssService
+{
+    private readonly ILogger<OssService> _logger;
+    private readonly AliyunOSSOptions _ossOptions;
+
+    public OssService(
+        ILogger<OssService> logger,
+        IOptions<AliyunOSSOptions> ossOptions)
+    {
+        _logger = logger;
+        _ossOptions = ossOptions.Value;
+    }
+
+    public async Task<string> CopyToOwnBucketAsync(string sourcePath, string sourceBucket, CancellationToken cancellationToken = default)
+    {
+        if (string.IsNullOrEmpty(sourcePath))
+        {
+            return sourcePath;
+        }
+
+        try
+        {
+            // sourcePath 是相对路径，直接作为 object key 使用
+            var objectKey = sourcePath.TrimStart('/');
+
+            // 创建OSS客户端
+            var client = new OssClient(_ossOptions.Endpoint, _ossOptions.AccessKeyID, _ossOptions.AccessKeySecret);
+
+            // 执行跨bucket复制
+            var request = new CopyObjectRequest(sourceBucket, objectKey, _ossOptions.BucketName, objectKey);
+            var result = client.CopyObject(request);
+
+            _logger.LogInformation("OSS跨bucket复制成功: {SourceBucket}/{ObjectKey} -> {TargetBucket}/{TargetKey}, ETag: {ETag}",
+                sourceBucket, objectKey, _ossOptions.BucketName, objectKey, result.ETag);
+
+            return objectKey;
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "OSS跨bucket复制失败: {SourcePath}", sourcePath);
+            return sourcePath; // 失败时返回原始路径
+        }
+    }
+}
diff --git a/QuestionLibraryMQConsumer/appsettings.json b/QuestionLibraryMQConsumer/appsettings.json
index dbd5736..d9dbdc3 100644
--- a/QuestionLibraryMQConsumer/appsettings.json
+++ b/QuestionLibraryMQConsumer/appsettings.json
@@ -52,5 +52,17 @@
         }
       }
     ]
+  },
+  "AliyunOSSConfigs": {
+    "AccessKeyID": "LTAI5tEBXGewpHSLiSxyx6Bf",
+    "AccessKeySecret": "w29b8wkw6XQVL8GWXgp3ZesgYeDKvf",
+    "VodBucketName": "outin-5277bbb52bec11f08dbd00163e169e2b.oss-cn-beijing.aliyuncs.com",
+    "BucketName": "qyzh-qb",
+    "Region": "beijing",
+    "RoleArn": "acs:ram::1064745380176636:role/aliyunosstokengeneratorrole",
+    "DurationSeconds": 3600, //过期时间(秒)
+    "Endpoint": "oss-cn-beijing.aliyuncs.com",
+    "ProjectName": "scs",
+    "Domain": "https://qyzh-qb.oss-cn-beijing.aliyuncs.com/"
   }
 }