Hi @lovepong66
You can try with Delete Range activity
In the Range try with this expression
"A2:"+UiPath.Excel.Helpers.ExcelUtilities.ConvertColumnIndexToColumnLetter(DtRead.Columns.Count)+(DtRead.Rows.Count+1).ToString
Check out this XAML file
DeleteRange.xaml (6.7 KB)
Regards
Gokul