Health codes cannot be cancelled and reapplied. Once the health code is registered with its real name, it cannot be cancelled, but it can be unbound or its name can be modified. Take Alipay as an example:
Open the login Alipay and click the health code;
Take Shandong as an example, select Shandong, and click View Now;
3. Click Self-help, and users can choose to unbind or modify their names according to their own needs.