Telephone inquiry, SMS inquiry, bill inquiry.

1. Telephone inquiry: Call the Bank of China Credit Card Center service hotline, 4006695566. You can inquire the Bank of China credit card balance by manual service or voice service.

2. SMS query: The cardholder can use the reserved mobile phone number to edit the text message "XYKZMYE#, the last four digits of the card number plus the pound sign key CNY" and send it to 95566 to query.

3. Bill inquiry: On the monthly statement day, the bill sent by the Bank of China credit card will clearly tell the user the balance status, repayment record, etc. on the Bank of China credit card.