1. First of all, you need to go to a regular plastic surgery hospital or a public hospital for diagnosis and evaluation by a professional doctor.

2. Secondly, the hospital will issue a formal cosmetic certificate, which will indicate the patient's personal information, the specific situation of cosmetic surgery, the date of surgery, the doctor's signature and other related information.

3. Finally, the patient needs to carry the cosmetic certificate issued by the hospital and go to the household registration management department of the local public security bureau to go through the formalities for the cosmetic certificate of the ID card.