first, open AliPay's mobile client and log in with your mobile phone number. On the main page of Alipay, click the "My" button in the lower right corner of the screen to enter the personal settings page. In the personal settings page, click the "Bank Card" option to enter the bank card management page. In the bank card management page, you will see a list of all bound bank cards. Find the credit card you want to unbind and click it. On the credit card details page, click the "Other" option, and then select "Manage". On the Administration page, you will see the Unbind option, click it. The system will ask if you are sure you want to unbind this bank card, and click "Unbind Still". Next, the system will ask for Alipay's payment password for verification. After entering the correct payment password, the system will begin to process the unbinding request. If the unbinding is successful, the system will give a corresponding prompt and successfully unbind the credit card from Alipay.