1. Log on to the official credit card website or APP. Usually, the official credit card website or APP will provide the function of checking the credit card balance. You only need to log in to your account, and you can query the credit card arrears information.

2. Call the credit card customer service. You can call the customer service phone on the back of the credit card, provide the customer service staff with the credit card number and query password, and the customer service staff will help to query the amount owed by the credit card.

3. Check the credit card bill. Credit cards will issue paper or electronic statements every month, and the amount owed by credit cards can be found on the statements.