1. Log in to the bank website or application, and log in to the account.

2. Look for options such as "payment management" or "bank card management" and click to enter.

3. On the page of payment management or bank card management, you will usually see an option of "bind" or "link", which will display a list of all payment applications or websites associated with the bank card.

4. Read the list carefully to confirm whether there are any unfamiliar applications or websites associated with the bank card.

5. If you find any suspicious items, you can disconnect the application or website from the bank card by clicking the items and choosing Unbind or Disconnect.

6. After confirming the changes, make sure to save and exit all relevant pages to ensure that all changes have taken effect.