diff --git a/IRC.Core.SCP/Service/CStoreSCPService.cs b/IRC.Core.SCP/Service/CStoreSCPService.cs
index 38d8892bd..7f55d3ed3 100644
--- a/IRC.Core.SCP/Service/CStoreSCPService.cs
+++ b/IRC.Core.SCP/Service/CStoreSCPService.cs
@@ -364,15 +364,16 @@ namespace IRaCIS.Core.SCP.Service
 
                         // 替换原 PixelData
                         dicomFile.Dataset.AddOrUpdate(newFragments);
+
+
+                        // 重新保存 dicom 到流
+                        ms.SetLength(0);
+                        dicomFile.Save(ms);
                     }
 
-                    // 重新保存 dicom 到流
-                    ms.SetLength(0);
-                    dicomFile.Save(ms);
+
                     ms.Position = 0;
 
-
-
                     #endregion