Functional uterine bleeding, or gynecological bleeding, is one of the common diseases in gynecology. It is often manifested as irregular menstrual cycle, prolonged menstrual period, excessive menstrual flow, etc. In general, there are two types of functional hemorrhage: ovulatory and anovulatory, with anovulatory hemorrhage occurring most frequently during puberty and menopause. For adolescent anovulatory hematemesis, it is normal for women to have irregular menstruation because they are developing and their gonadal organs are not well developed. However, some adolescents may show excessive and prolonged menstruation, which in this case causes secondary blood loss anemia and symptoms such as weakness, palpitations, dizziness, loss of appetite and depression. For menopause functional uterine bleeding is more common in clinical practice, manifested as frequent menstruation, prolonged periods, and in a small number of patients, excessive menstruation and severe anemia. However, since this perimenopausal period is a period with a high incidence of gynecological tumors, once menopausal women have abnormal menstruation, they should first exclude the possibility of gynecological tumors and then treat functional uterine bleeding symptomatically after excluding the bleeding caused by gynecological tumors. The doctor should choose the most suitable treatment according to the patient’s examination results. It is especially worth noting that the medication for functional uterine bleeding must be carried out strictly according to the doctor’s prescriptions, otherwise, it will have the opposite effect. It is very important for patients to improve their living habits, balanced nutrition and proper exercise in their daily life.