diff --git a/插件库/Lskj.PubBomImport/FrmMain.cs b/插件库/Lskj.PubBomImport/FrmMain.cs
index fb5062d..bf91a96 100644
--- a/插件库/Lskj.PubBomImport/FrmMain.cs
+++ b/插件库/Lskj.PubBomImport/FrmMain.cs
@@ -201,7 +201,7 @@ namespace Lskj.PubBomImport
                                     if (fileBC >= childMaxBc)
                                     {
                                         childMaxBc = fileBC;
-                                        childMaxSname = $"{fileCode}{(fileBC > 0 ? fileBC + "" : "")} {name}";
+                                        childMaxSname = $"{fileCode}{(fileBC > 0 ? fileBC + "" : "")} {name}{Path.GetExtension(fileName)}";
                                     }
                                 }
                                 var selectFiles = fileNames.Where(n => Path.GetFileName(n).Trim().StartsWith(code));