There are many types of credit cards in China Construction Bank's credit card service, but no matter which type of credit card you choose, when you want to withdraw cash by credit card, the amount you can withdraw is 50% of the credit card amount. Under normal circumstances, the advance cash of credit card will not exceed 50% of the credit limit, and there is no interest-free period for the advance cash of credit card, so under normal circumstances, it is best not to use the cash withdrawal function of CCB credit card, or to use it as little as possible to avoid paying high fees and interest when using CCB credit card.