diff --git a/IRaCIS.Core.Application/Helper/OSSService.cs b/IRaCIS.Core.Application/Helper/OSSService.cs
index 4f7f12646..864f1642f 100644
--- a/IRaCIS.Core.Application/Helper/OSSService.cs
+++ b/IRaCIS.Core.Application/Helper/OSSService.cs
@@ -544,22 +544,23 @@ public class OSSService : IOSSService
                         var args = new GetObjectArgs()
                             .WithBucket(minIOConfig.BucketName)
                             .WithObject(ossRelativePath)
-                            .WithCallbackStream(stream =>
+                            .WithCallbackStream(async source =>
                             {
-                                stream.CopyTo(pipe.Writer.AsStream());
+                                await source.CopyToAsync(pipe.Writer.AsStream());
+                                await pipe.Writer.FlushAsync();
                             });
 
                         await minioClient.GetObjectAsync(args);
-                        await pipe.Writer.CompleteAsync();
                     }
-                    catch (Exception ex)
+                    finally
                     {
-                        await pipe.Writer.CompleteAsync(ex);
+                        await pipe.Writer.CompleteAsync();
                     }
                 });
 
                 return pipe.Reader.AsStream();
 
+               
                 #region 废弃2 
 
                 //var pipe = new System.IO.Pipelines.Pipe();