Credit card is a credit certificate issued by a commercial bank or credit card company to eligible consumers.

The form of credit card is a card with the name of the issuing bank, expiration date, number, cardholder's name and other contents printed on the front. Consumers with credit cards can go to specialized commercial service departments for shopping or spending, and then the bank will settle accounts with merchants and cardholders, and cardholders can overdraw within the prescribed limit.