Polycystic ovary syndrome is a common endocrine syndrome in women of childbearing age and is a clinical syndrome with multiple causes and highly heterogeneous manifestations. Symptoms and signs 1. Menstrual abnormalities: scanty menstruation, amenorrhea, and in a few cases, functional uterine bleeding. Prolonged menstrual cycle, >35 days. 2.Hirsutism is more common. Due to the elevation of androgen, it can be seen that the hair on the upper lip, jaw, chest, back, middle of the abdomen, both sides of the upper thigh and perianal area is thickened and increased, but the degree of hirsutism is not proportional to the androgen level (affected by various factors such as the number of receptors, estrogen, SHBG and the sensitivity of hair follicles to androgen). At the same time, it can be accompanied by acne, excessive secretion of facial sebum, low coarse voice, enlarged clitoris, the appearance of throat knots and other signs of masculinity. 3, infertility due to long-term non-ovulation, patients mostly combined infertility, sometimes there may be occasional ovulation or miscarriage. 4, obesity weight more than 20% of the standard weight, body mass index ≥ 25 accounted for 30% to 60%. Obesity is mostly concentrated in the upper body with waist/hip ratio >0.85. 5. Ovarian enlargement A few patients may have enlarged and tough ovaries palpable through general gynecological examination, most of them need adjuvant examination to determine. Complications 1. Tumor persistent, acyclic, relatively high estrogen levels and elevated E1 and E1/E2 ratios stimulate the endometrium without progesterone resistance, increasing the incidence of endometrial and breast cancer. 2, cardiovascular disease lipid metabolism disorders, easy to cause atherosclerosis, leading to coronary heart disease, hypertension, etc. 3, diabetes insulin resistance state and hyperinsulinemia, obesity, easy to develop into hidden diabetes or diabetes. 4, acne: excessive sebum secretion on the face due to hirsutism. 5. Infertility: due to amenorrhea without ovulation. Diagnosis According to the Rotterdam criteria, dilute menstruation, polycystic ovaries, hyperandrogenemia or hyperandrogenic signs can be diagnosed by meeting two of the three criteria. Treatment is based on clinical symptoms and signs, age and fertility requirements of the patient.