Whether you can get on the plane without changing your ID card after plastic surgery depends on whether your ID card has changed greatly after plastic surgery. If the plastic surgeon just made a double eyelid surgery, or padded his nose, and the change is not big, the security personnel can recognize it, then he can get on the plane. If the plastic surgery changes too much and is too different from the ID card, then you may not be able to get on the plane.
If the cosmetic doctor is worried that he can't get on the plane and hasn't changed his ID card, he can bring his own cosmetic certificate, hospital certificate and general cosmetic materials with photos before and after cosmetic surgery, so that the security personnel can confirm that he is holding the plane on his ID card.
After plastic surgery, it is recommended to change your ID card in time. After all, ID cards will be used frequently. If it is too different from me, it may bring a lot of inconvenience to people. You have to change your ID card at your domicile, and it will take some time to get it. In the meantime, it's convenient to run a temporary id card.