中文：

银行卡密码是保障我们账户安全的重要手段。然而，有时候我们会遇到银行卡密码错误的情况，这可能会给我们带来很多麻烦。那么，为什么银行卡密码会不对呢？

首先，最可能的原因是您输入的密码与银行记录的密码不匹配。这可能是由于您输入密码时出现了错误，或者银行记录的密码被错误地输入了。此外，如果您在多个设备或网站上使用了相同的密码，那么这也可能导致密码被错误地输入。

其次，银行可能会对密码进行限制，以保护账户安全。例如，有些银行可能会限制密码的长度或包含的字符类型。如果您使用的密码不符合这些限制，那么银行可能会拒绝您的密码。

最后，如果您忘记了密码，那么您需要联系银行进行重置。在某些情况下，银行可能会要求您提供额外的信息来验证您的身份。如果您无法提供正确的信息，那么银行可能会拒绝您的请求。

总之，银行卡密码不对可能是由于多种原因导致的。如果您遇到了这种情况，那么您需要仔细检查您的密码和账户信息，并与银行联系以解决问题。

英文：

Bank card password is an important means to protect the security of our accounts. However, sometimes we may encounter the situation that the bank card password is wrong, which may bring us a lot of trouble. So, why is the bank card password wrong?

Firstly, the most likely reason is that the password you enter does not match the password recorded by the bank. This may be due to the mistake when you enter the password, or the password recorded by the bank is entered incorrectly. In addition, if you use the same password on multiple devices or websites, this may also lead to the password being entered incorrectly.

Secondly, banks may restrict passwords to protect account security. For example, some banks may limit the length of passwords or the type of characters they contain. If your password does not meet these restrictions, the bank may refuse your password.

Finally, if you forget your password, you need to contact the bank for reset. In some cases, the bank may ask you to provide additional information to verify your identity. If you can not provide the correct information, the bank may refuse your request.

In summary, the bank card password is wrong may be due to a variety of reasons. If you encounter this situation, then you need to carefully check your password and account information, and contact the bank to solve the problem.