What happened when the bank card was frozen? First, illegal funds, securities and other property involved are transferred or hidden; Second, it is possible to transfer or conceal illegal funds, securities and other property involved; Third, important evidence is concealed, forged or destroyed; Fourth, it is possible to conceal, forge or destroy important evidence; Fifth, other situations that need to be frozen and sealed up in time. You can ask the bank about the reason for the freeze according to law, and many criminals lie that it is because of the crime freeze. First, your bank card is a credit card (debit card). If it is frozen, it may be that your credit card has an abnormal transaction, such as malicious cash withdrawal, forged information, and consecutive password errors. The bank card may be frozen by the bank. Second, if you overdraw your bank card, the bank will make an overdraft share for you according to your actual repayment ability. When your overdraft exceeds your share, the bank will freeze your bank card immediately. Your bank card is a debit card. If it is frozen, it will be frozen in the wrong account, that is to say, the bank mistakenly gave more money to your account during the transaction, so the bank may freeze the part that was given to you. The first is the judicial freeze. According to the relevant provisions of the law, the judicial organ may apply to the bank for freezing your bank card because of the need of handling a case. At the same time, customs, tax authorities and other departments also have the right to freeze. 4. No matter what kind of bank card you enter, if you enter it incorrectly three times in a row, the banking system will automatically lock your bank card password, which is similar to freezing, but not freezing. It will be released automatically after 24 hours. If you don't apply for a new card when your bank card expires, the bank will freeze your expired bank card after it expires. 6. If your bank card reports the loss several times in a row, it will be frozen because the bank thinks it is suspected of malicious loss reporting.