您好，Excel表格密码解密步骤如下：
1. 打开需要解密的Excel表格，输入密码，如果密码正确，就可以打开表格；如果密码错误，需要重新输入。
2. 如果忘记了密码，可以使用VBA宏来破解密码。打开Excel表格，按下“Alt + F11”组合键，打开VBA编辑器。在编辑器中，选择“插入”->“模块”，然后将下面的代码复制到新建的模块中：
Sub PasswordBreaker()
'Breaks worksheet password protection.
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)
Exit Sub
End If
Next: Next: Next: Next: Next: Next
Next: Next: Next: Next: Next: Next
End Sub
3. 点击“运行”按钮，宏将自动运行并显示可用的密码。复制该密码，并使用它来打开Excel表格。
注意：使用VBA宏破解密码是一种不安全的方法，建议仅在必要时使用。此外，如果Excel表格受到密码保护，那么其中的数据就不是安全的。建议使用更强大的安全措施，如加密软件来保护重要数据。
