Bank credit card status blocking code is a code used to restrict users from using the card and reflect the abnormal status of customer accounts. The reasons for freezing credit cards are as follows:

1. When the cardholder repeatedly enters the password of the credit card, the bank will block the cardholder's credit card several times.

2. If the cardholder's credit is damaged or the cardholder's credit is at risk, and the cardholder is suspected of fraud, the bank will block the user's credit card.

3. If the cardholder is overdue for more than 30 days, the bank will block the cardholder's credit card.

4. The credit line used by the cardholder is greater than the credit line given by the bank, which leads to the credit line exceeding the limit.