一、利用VBA脚本直接清除

打Excel，打开脚本编辑器（Alt+F11）或者如图，右键sheet名称

输入代码并运行，即可清除密码保护：

Sub DeletePW()
    ActiveSheet.Protect DrawingObjects:=True, Contents:=True, AllowFiltering:=True
    ActiveSheet.Protect DrawingObjects:=False, Contents:=True, AllowFiltering:=True
    ActiveSheet.Protect DrawingObjects:=True, Contents:=True, AllowFiltering:=True
    ActiveSheet.Protect DrawingObjects:=False, Contents:=True, AllowFiltering:=True
    ActiveSheet.Unprotect
End Sub

二、找回密码，并清除密码保护

跟上边相同，输入如下代码并运行，可找回密码，并且同时清除密码保护：

Sub PasswordBreaker()
    Dim i As Integer, j As Integer, k As Integer
    Dim l As Integer, m As Integer, n As Integer
    Dim i1 As Integer, i2 As Integer, i3 As Integer
    Dim i4 As Integer, i5 As Integer, i6 As Integer
    On Error Resume Next
    For i = 65 To 66: For j = 65 To 66: For k = 65 To 66
    For l = 65 To 66: For m = 65 To 66: For i1 = 65 To 66
    For i2 = 65 To 66: For i3 = 65 To 66: For i4 = 65 To 66
    For i5 = 65 To 66: For i6 = 65 To 66: For n = 32 To 126
    ActiveSheet.Unprotect Chr(i) & Chr(j) & Chr(k) & Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
    If ActiveSheet.ProtectContents = False Then
    MsgBox "password is： " & Chr(i) & Chr(j) & Chr(k) & Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
    Exit Sub
    End If
    Next: Next: Next: Next: Next: Next
    Next: Next: Next: Next: Next: Next
End Sub

三、用python代码批量处理多个Excel文件 

注意：这种方法前提是得知道密码，如果不知道，按上述第二种方法先找回密码。

直接上代码：

'''
Title: 批量清除Excel保护密码
Author: JackieZheng
Date: 2022-04-07 20:38:46
LastEditTime: 2022-04-08 18:35:37
LastEditors: Please set LastEditors
Description:
FilePath: \\pythonCode\\RemoveExcelPwd.py
'''


import os
import win32com.client
from win32com.client import Dispatch


# 如果有打开的excel窗口先关闭,否则后边会报错
def removePassword(path,password):
    try:
        xlApp =  win32com.client.DispatchEx('Excel.Application')
    except Exception as err:
        print('错误: %s' % err)
    try:
        for file in os.listdir(path):
            filepath = os.path.join(path, file)
            if not os.path.isfile(filepath):
                continue
            print(filepath)
            xlApp.Visible = False
            xlApp.DisplayAlerts = False
            wb = xlApp.Workbooks.Open(filepath)
            try:
                # print(password)
                wb.Unprotect(password)
                wb.Checkcompatibility = False
                sht = wb.Worksheets('Sheet1')
                sht.Unprotect(password)
            except Exception as err:
                print('清除 %s 的保护密码出错：%s' % (file, err))


            wb.Save()
            wb.Close(SaveChanges=True)

    finally:
        if hasattr(xlApp, 'Quit'):
            xlApp.Quit()



path=r'E:\数据\2021院校专业计划'
password=r'135246'
removePassword(path,password)