after the p>visa card is swiped with USD, you need to activate the function of purchasing foreign exchange, and you can use RMB for repayment. Generally, the methods for opening the function of purchasing foreign exchange are as follows:

1. Bring my ID card and credit card and open it at the branch of the credit card bank.

2. Call the customer service phone of the bank and open it through manual service.

3. Log in to official website of the credit card bank to open it.

after opening, the borrower only needs to deposit the corresponding RMB in the credit card, and the deposited repayment will be automatically converted into US dollars, giving priority to the cardholder's US dollar bill. General credit card repayment methods are as follows:

1. Take your identity and credit card, go to the branch of the bank to which the credit card belongs, and deposit cash for repayment.

2. Repayment can be made online through the official website of the credit card bank or the mobile APP.