- 清空单一工作表
Sub ClearContents ()
    Application.Calculation = XlManual
    Application.ScreenUpdating = False
         Sheets("worksheet_name").Cells.ClearContents
    Application.ScreenUpdating = True
End Sub
- 清空所有工作表
Sub clear_all_worksheets()
    Dim ws as worksheet
    For each ws in ThisWorkbook.Worksheets
        ws.Cells.ClearContents
    Next
End Sub