If it's a CMB credit card, you can't cancel your account online. After the credit card account is settled, please call the customer service hotline, enter your ID number or card number and inquiry password according to the voice prompt, and then select "9" transfer service specialist to cancel it for you. Cancellation is free and cannot be handled for you through the network service at present. Business credit card cancellation needs to contact the company to issue a special business processing form application.