1.启用宏
2.录制宏（输入宏名passbreak后停止）
3.查看宏---编辑
4.vb编辑器中删除系统自动生成的代码输入以下代码，保存
5.运行宏

代码如下：

Sub PassBreak()
　　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 "One usable 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)
　　ActiveWorkbook.Sheets(1).Select
　　Range("a1").FormulaR1C1 = 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

excel保护密码