If there is a large area of flaky scar on the head, the patient has no subjective requirements for achieving a completely scar-free effect. If the hair is transplanted, the damage in the hair removal area will be greater and the cost will be higher. It is suggested to treat with scalp dilator first, and then transplant hair if necessary. The linear scars of eyebrows, eyelashes or beards do not need to be repaired too much, and good results can be achieved directly through hair transplantation.