Credit card bill inquiry has many advantages: when there is any discrepancy with bank reconciliation, the bill content can be compared with the saved credit card consumption receipt; Merchants can complain to China UnionPay according to the query results of credit card bills after charging fees illegally in different places; When swiping a card at a pos machine in a store, supermarket or hotel, if the money is swallowed due to a failure, you can compare the results of the receipt and the credit card bill as evidence, negotiate with the merchant or bank to defend your rights, and complain to UnionPay. In addition, you can also urge yourself to spend rationally. I suggest you check your credit card bill frequently to ensure the safety of your credit card and help yourself develop good consumption habits.