用vba,很简单。把这个宏弄到工作簿里,假设“品牌”那一列里没有空行
Public Sub AddColumn()
Dim i As Long
Dim sCol As String
i = 1 '
sCol = Application.InputBox("输入“品牌”所在的列名,如A,E等")
While Range(sCol & i).Value <> ""
If Range(sCol & i).Value = "品牌" Then
Rows(i & ":" & i + 1).Insert Shift:=xlDown
Range(sCol & i).Resize(2, 1) = Application.WorksheetFunction.Transpose(Array("备注1", "备注2"))
i = i + 3
End If
i = i + 1
Wend