merge all worksheets in current directory

Sub 合并当前目录下所有工作簿的全部工作表()
Dim MyPath, MyName, AWbName
Dim Wb As Workbook, WbN As String
Dim G As Long
Dim Num As Long
Dim BOX As String
Application.ScreenUpdating = False
MyPath = ActiveWorkbook.Path
MyName = Dir(MyPath & "" & "2017*.xl*")
AWbName = ActiveWorkbook.Name
Num = 0
Do While MyName <> ""
    If MyName <> AWbName Then
        Set Wb = Workbooks.Open(MyPath & "" & MyName)
        Num = Num + 1
        With Workbooks(1).ActiveSheet
            If Num = 1 Then
                For G = 1 To Sheets.Count
                    Wb.Sheets(G).UsedRange.Copy .Cells(.Range("A655360").End(xlUp).Row, 1)
                Next
            Else
                For G = 1 To Sheets.Count
                    '下列代码可以设定除第一个Excel表格以外的Excel文件从第几行或第几列开始合并以便去除第一个Excel表格以外需要合并的Excel表格所有表头。"UsedRange.Offset(1, 0)"代表去除第1行第0列,一般不建议对列进行设置，以免与表头对应出现混乱。
                    Wb.Sheets(G).UsedRange.Offset(1, 0).Copy .Cells(.Range("A655360").End(xlUp).Row + 1, 1)
                Next
            End If
            WbN = WbN & Chr(13) & Wb.Name
            Wb.Close False
        End With
    End If
    MyName = Dir
Loop
Range("A1").Select
Application.ScreenUpdating = True
MsgBox "共合并了" & Num & "个工作薄下的全部工作表.如下：" & Chr(13) & WbN, vbInformation, "提示"
End Sub