If it is a credit card of China Merchants Bank, the installment amount will be deducted first. The Bank shall repay the cardholder in the order of paid bills and unpaid bills; Pay off your account item by item according to the order of annual fee, interest, expenses, cash advance principal and credit card consumption principal; Among them, if there are more than one advance cash principal or credit card consumption principal, they shall be offset respectively according to the transaction time sequence. The order of write-off is very complicated. Please refer to the bill for the final amount.