The credit card contract number can be inquired through the bank counter. According to the relevant information and credit card processing rules, the way to query the credit card contract number is to ask the bank counter staff for help through the bank counter. Personal credit card users can provide personal ID information, and the credit card number can be retrieved from the bank counter. When retrieving the credit card contract number, you need to call the relevant bank staff in advance to make an appointment, so that the business can proceed smoothly.