Polycystic ovary syndrome leading to infertility is the need for timely treatment. Polycystic ovary syndrome is one of the more common endocrine diseases in women of childbearing age, the main clinical manifestations of menstrual disorders, hirsutism, acne, infertility, etc., through the gynecological ultrasound, sex hormone measurements, etc., combined with the symptoms of the patient for diagnosis. Polycystic ovary syndrome is often characterized by ovulation disorders and excessive proliferation of the endometrium under the action of long-term estrogen, which can cause endometriosis and infertility. Therefore, infertility in patients with polycystic ovary syndrome requires active treatment, which generally includes weight control, dietary adjustment, regulation of the menstrual cycle, ovulation induction and so on. After treatment, pregnancy can be achieved and the occurrence of endometriosis can be prevented.