Yes, if two credit cards are handled in the same bank, the bank line is shared. The shared line mainly means that all credit cards of the same bank held by the same cardholder enjoy the same credit line. Precautions for banks to handle credit cards, although credit cards do not need mortgage guarantee, will be affected to some extent and must meet the application conditions before they can be handled. Applicants need to have sufficient repayment ability and fill in work information.