diff --git a/Tiobon.Core.Services/Ghre/Ghre_ExamPaperServices.cs b/Tiobon.Core.Services/Ghre/Ghre_ExamPaperServices.cs
index 00798286..8002abe8 100644
--- a/Tiobon.Core.Services/Ghre/Ghre_ExamPaperServices.cs
+++ b/Tiobon.Core.Services/Ghre/Ghre_ExamPaperServices.cs
@@ -184,7 +184,7 @@ public class Ghre_ExamPaperServices : BaseServices<Ghre_ExamPaper, Ghre_ExamPape
             Directory.CreateDirectory(physicsPath + path);
 
         path = path + body.exportSet.TitleName + ".xlsx";
-        NPOIHelper.ExportExcel(dt, null, "sheet1", physicsPath + path);
+        NPOIHelper.ExportExcel(dt, body.exportSet.TitleName, "sheet1", physicsPath + path);
         var result = new ExcelData();
         result.filePath = path;
         result.fileName = body.exportSet.TitleName + ".xlsx";