Hereditary hair loss contains many factors, such as androgenetic alopecia, monogenetic alopecia, etc. Finasteride has some therapeutic effects on androgenetic alopecia. A part of genetic hair loss is caused by androgen secretion, and Finasteride belongs to the specific inhibitor, can reduce the level of androgen in the body, so it can be used to use to relieve the symptoms of androgenic alopecia. With the reduction of androgen levels in the body after using the drug, side effects such as hypogonadism and gynecomastia may occur. Hereditary alopecia may also be due to other factors, such as single gene genetic alopecia, Finasteride has no obvious efficacy on it, and there is no effective treatment for this type of alopecia, which can be used to improve the appearance by wearing wigs and other ways. It is recommended that patients with genetic alopecia should consult a doctor in time to clarify the cause of the disease, and then standardize the treatment under the guidance of the doctor, avoiding the use of private medication, so as not to delay the condition.