https://jingyan.baidu.com/article/63f236281f17650208ab3d97.html

Sub 數據對比()
    Dim i As Integer
    Dim j As Integer
    For i = 2 To 3225      ‘員工基礎報表數據範圍
        For j = 2 To 2028    ‘員工待遇統計表數據範圍
         If Sheets("old").Cells(i, 6) = Sheets("new").Cells(j, 6) Then
               Sheets("old").Cells(i, 8) = "已存在"   ‘存在時進行標記
 

         End If
        Next j
    Next i
End Sub

Excel如何實現兩個工作表數據的對比