Boys hair baldness may be physiological reasons, such as age, usually without special treatment; may also be caused by pathological reasons, such as seborrheic alopecia, baldness and other diseases, the patient should be based on different causes of different therapeutic measures, such as medication, physical therapy, and so on. 1. Physiological reasons: with the growth of age, the body’s functions will show the phenomenon of aging, scalp follicles will gradually shrink, so there will be the phenomenon of male pattern baldness. This phenomenon belongs to the physiological hair loss in old age, generally do not need special treatment. 2. Pathological causes: (1) seborrheic alopecia: it is a common hair loss disease that occurs in adolescence and post-puberty, which can be manifested as a gradual reduction of hair on the top of the forehead, thinning of hair or hair thinning, and so on, and there is a phenomenon of baldness of hair. Male patients can follow the doctor’s instructions for external use of drugs such as minoxidil, oral small doses of finasteride and other drugs. Patients with seborrheic alopecia can also choose hair transplantation according to their own needs and after evaluation by a doctor if the medication is not effective. (2) Patchy baldness: a common non-scarring alopecia, which can also show the phenomenon of baldness in boys, and there is no scarring or inflammatory reaction in the hair loss area. Patients can follow the doctor’s instructions to use topical minoxidil, halometasone cream and other drugs, intramuscular injection of compound betamethasone and other glucocorticosteroids and other medications, but also through photodynamic therapy, laser therapy and other physical methods to improve the symptoms. If physiological reasons are excluded, patients are advised to go to the hospital in time to identify the cause of the disease, make a clear diagnosis and actively cooperate with doctors for treatment.