Polycystic ovary syndrome mostly develops after the onset of menstruation. Most adolescent girls are often irregular after menstruation, but it can be adjusted naturally after 2 years. If menstruation remains abnormal for more than 2-3 years, we should be alert to the possibility of polycystic ovary syndrome. The main manifestations of polycystic ovary syndrome are sparse menstruation and low volume; externally, these patients tend to be obese, and they are abdominally obese, and most of them are hairy, have acne and seborrheic dermatitis. An ultrasound can reveal 8-10 follicles on the ovaries of these patients. Of course, since once this disease is diagnosed, it is a lifelong disease, so the diagnosis should be as rigorous as possible, but the presence of the aforementioned conditions should be a high-risk group, and immediate medical attention should be sought. The cause of polycystic ovary syndrome is still unclear, and it is speculated that it may be a polygenic genetic disorder. There is a family history, prepubertal obesity and other high risk factors for metabolic abnormalities. Treatment of polycystic ovary syndrome 1. First of all, lifestyle changes, diet adjustment and weight control are needed. Studies have shown that a decrease in body mass index (BMI) can improve ovulation and promote fertility; it can also reduce insulin and androgen levels and restore normal metabolism, menstruation and ovulation. In general, a 5% weight loss can reduce hyperandrogenic symptoms such as hirsutism and acne. Therefore, choosing a low-sugar, low-fat diet and strengthening exercise to reduce body weight is an inexpensive and effective basic method. 2.At present, oral contraceptives have become a long-term application for patients with polycystic ovary syndrome. It is mainly used to adjust menstrual cycle, fight against androgen-induced hirsutism and acne symptoms, and protect the endometrium. 3.Patients with combined obesity and insulin resistance can take metformin to improve metabolic abnormalities. 4. For patients with fertility requirements, ovulation promotion therapy is needed. Currently, clomiphene is the drug of choice for ovulation promotion therapy. If the use of clomiphene is ineffective, gonadotropins can be applied. Patients should be reminded that the treatment of this disease should be individualized according to the patient’s wishes and adjusted according to the treatment results, so they should have more face-to-face communication with their doctors; in addition, polycystic ovary syndrome has the risk of endometrial hyperplasia and even cancer, therefore, patients with long-term amenorrhea should undergo endometrial biopsy to eliminate hidden dangers.