There are many causes of fever on the top of the head with hair loss, which may be caused by systemic diseases such as malignant malnutrition, hypopituitarism, thyroid abnormalities, iron deficiency, drug-related alopecia, leprosy alopecia, lupus alopecia, syphilis alopecia or AIDS alopecia. If a male has a family history of hair loss, androgenic alopecia is the most likely cause of male pattern baldness, which is generally related to genetic factors and hormone levels. The hair is normal before hair loss, and most of it starts from the sideburns on both sides of the forehead in an M-shaped gradual upward expansion. The main treatment is to do a good job of thinking, lifting the patient’s mind burden, avoiding excessive washing and external use of stimulating drugs, can be given oral finasteride, generally need to be taken orally for 6-12 months, while the local can be used topically 2%-5% tincture of minoxidil rub, can also be hair transplantation.