diff --git a/CalendarNotepad/WorkMain.cs b/CalendarNotepad/WorkMain.cs
index 0077a63..dce22ac 100644
--- a/CalendarNotepad/WorkMain.cs
+++ b/CalendarNotepad/WorkMain.cs
@@ -335,7 +335,8 @@ namespace CalendarNotepad
                 return;
             }
             var filePath = sdlg.FileName;
-            File.Copy(this.Db.SqliteDbfile,filePath);
+            //File.Copy(this.Db.SqliteDbfile,filePath);
+            this.Db.DbMaintenance.BackupDataBase(null,filePath);
             MessageBox.Show("备份完成");
         }