Knowing each other's ID number and credit card number is not enough to directly query each other's consumption records. To inquire about credit card consumption records, you need to know the online banking account number and password of the other party, or send instructions to the issuing bank through the mobile phone number reserved by the other party, or call the issuing bank to apply for inquiry. If the other party uses a secondary card and is the cardholder of the primary card, he can inquire about the bill of his primary card, but the consumption of the secondary card is generally recorded in the bill of the primary card, and the repayment is also paid together with the primary card.