If the scalp is injured and cannot grow hair, if the hair follicles are not yet completely damaged, medication can still be used to promote hair growth. However, if the hair follicles are completely damaged and the hair follicles in the injured area cannot be regenerated, hair follicle transplantation treatment is needed. If the patient’s scalp is injured but not the follicular part of the scalp, there is still a possibility of hair regrowth. In this case, the patient can use topical minoxidil under the guidance of the doctor, because minoxidil belongs to the peripheral vasodilator drugs, adhere to the use can promote hair growth. However, it should be noted that if the patient’s scalp hair follicles are completely destroyed, there is no possibility of hair regrowth, you need to take hair transplantation, so that the local transplantation of sufficiently healthy hair follicles, transplanted to the area in need. If the patient has an injured scalp and cannot grow hair, he/she needs to take into account his/her own situation and seek the help of a doctor.