diff --git a/IRaCIS.Core.Application/Helper/OSSService.cs b/IRaCIS.Core.Application/Helper/OSSService.cs
index a9b420c28..b891a3946 100644
--- a/IRaCIS.Core.Application/Helper/OSSService.cs
+++ b/IRaCIS.Core.Application/Helper/OSSService.cs
@@ -518,11 +518,12 @@ public class OSSService : IOSSService
 
                 var result = _ossClient.GetObject(aliConfig.BucketName, ossRelativePath);
 
-                // 将OSS返回的流复制到内存流中并返回
-                var memoryStream = new MemoryStream();
-                await result.Content.CopyToAsync(memoryStream);
-                memoryStream.Position = 0; // 重置位置以便读取
-                return memoryStream;
+                return result.Content;
+                //// 将OSS返回的流复制到内存流中并返回
+                //var memoryStream = new MemoryStream();
+                //await result.Content.CopyToAsync(memoryStream);
+                //memoryStream.Position = 0; // 重置位置以便读取
+                //return memoryStream;
             }
             else if (ObjectStoreServiceOptions.ObjectStoreUse == "MinIO")
             {
@@ -608,10 +609,13 @@ public class OSSService : IOSSService
 
                 var response = await amazonS3Client.GetObjectAsync(getObjectRequest);
 
-                var memoryStream = new MemoryStream();
-                await response.ResponseStream.CopyToAsync(memoryStream);
-                memoryStream.Position = 0;
-                return memoryStream;
+                // ⭐ 直接返回流
+                return response.ResponseStream;
+
+                //var memoryStream = new MemoryStream();
+                //await response.ResponseStream.CopyToAsync(memoryStream);
+                //memoryStream.Position = 0;
+                //return memoryStream;
             }
             else
             {