1. First open the China Construction Bank app on the desktop and click on the top left corner of the home page.

2. Then in the pop-up interface box, click Login to log in to the client.

3. After logging in, return to the home page and click the account indicated by the arrow.

4. After entering the account page, click the credit card to unbind.

5. Next, enter the credit card management page and click Unbind.