Need to take the initiative to contact the bank to ask for thawing. Call the bank's customer service first and ask the reason for the freeze and whether it can be unfrozen. Some cards cannot be unfrozen and can only be cancelled. Some cards may be caused by risky or suspicious transactions, and transaction vouchers need to be provided. If it is overdue, and the overdue situation is not serious, as long as the credit card center confirms that your arrears have been paid off, it will unfreeze you immediately, and your credit card can be used after unfreezing.