There are four ways to modify the personal data of CITIC Bank's credit card: (1) online banking modification): open CITIC Bank's credit card on the webpage, and select "Customer Service" → "cardholder information query modification" after the certificate is logged in (you must log in with the certificate, and you can modify the telephone number, email address and mailing address, but you cannot change the new address); (2) WeChat modification: After entering the homepage of CITIC Credit Card WeChat page, select "My Account"-"Data Modification", and WeChat will prompt "If you need to modify your communication information: click here to modify it". Please select "Click here to modify" to modify the information as prompted. You need to log in with your ID number and telephone service password. (3) Quick online banking modification: After verifying the dynamic verification code of the mobile phone, you can modify the company phone number, mobile phone number, mailing address, postal code and email address of the emergency contact person through the operation items of "Quick online banking" (e-banking) and "Personal Settings" (only 1 can be modified at a time). The modification of customer information by Express Online Banking will take effect after the settlement of the system. General changes will take effect on the same day and the next day. (4) Telephone modification: Call the customer service hotline 40088-95558, enter the information according to the prompt, and then press "0" → "7" to enter the telephone service password or directly press "*→ #" to enter the manual service application for modification.