diff --git a/IRC.Core.SCP/Service/CStoreSCPService.cs b/IRC.Core.SCP/Service/CStoreSCPService.cs
index 1c7bf6392..1b836a0f2 100644
--- a/IRC.Core.SCP/Service/CStoreSCPService.cs
+++ b/IRC.Core.SCP/Service/CStoreSCPService.cs
@@ -561,10 +561,14 @@ namespace IRaCIS.Core.SCP.Service
 
                             bot.Add(botOffset);
 
-                            botOffset += (uint)data.Length + 8; // 累加帧长度
+                            botOffset += (uint)data.Length;
+
 
                             while (offset < data.Length)
                             {
+                                botOffset += 8;
+
+
                                 int size = Math.Min(fragmentSize, data.Length - offset);
                                 var buffer = new byte[size];
                                 Buffer.BlockCopy(data, offset, buffer, 0, size);