1. Log in to China Mobile Construction Bank first, click "More Credit Cards" in the "Credit Cards" section, find "Bank Cards" here, and then click.

2. Secondly, on the credit card details page, click the user's credit card application card.

3. Then select all credit cards that need to cancel their bank cards, and click "Apply Now" at the bottom of the card.

4. Finally, fill in the card application information according to the prompt, click Submit, and wait for approval.