Generally speaking, there is no limit to the number of credit cards that banks can handle. If you handle the credit cards of the same bank, then their credit lines are shared, and the credit lines of the cards with the highest credit lines are shared. For example, three credit cards have been processed in China Bank, with the maximum amount of 20,000, and one card has been swiped 1 10,000, so the total amount of the other two credit cards is 1 10,000.

However, when handling credit cards, it is best to keep the number of credit cards in a bank at 1-2, and don't handle too many credit cards. Too many cards are easy to forget to repay, and there will be an annual fee.