1. Menstrual regulation and weight loss control? Achieved by Da-Ying-35, Metformin, exercise, nutrition and lifestyle modification (see “Strategies to help pregnancy in polycystic ovary syndrome (I) (II)” for details). 2.Ovulation promotion treatment: take clomiphene or letrozole orally for 3-5 days after menstruation, or add gonadotropin injection to promote follicle growth and development, monitor ultrasound and blood hormone level regularly to clarify follicle development, have intercourse during ovulation or inject semen into the uterine cavity for artificial insemination after purification treatment. 3. IVF can be used to assist pregnancy if there is still no pregnancy after 4-6 cycles of ovulation treatment, natural intercourse or artificial insemination, or if there is also obstruction of fallopian tubes and other pathologies, and the male partner has moderate to severe oligozoospermia. Ovulation-promoting drugs are applied to make multiple follicles mature, and the eggs are removed by puncture and aspiration, cultured in the laboratory together with sperm to form embryos, which are placed directly into the uterine cavity to develop into a fetus. Surgical treatment: Some patients with polycystic ovary syndrome are treated by open or laparoscopic removal of some ovarian tissues or perforation of ovarian tissues, which can restore menstruation and ovulation after treatment, but great caution is needed because if too much ovarian tissue is damaged, ovarian function may decline or fail after surgery. Special reminders: 1. In polycystic ovary syndrome, during ovulation promotion or IVF treatment, multiple follicles are likely to develop, more than 20 or even 30-40 follicles, resulting in ovarian hyperstimulation syndrome, which manifests as abdominal distention, ascites, and enlarged ovaries, requiring a high protein diet and avoiding strenuous exercise to prevent ovarian torsion (please refer to “Causes and Treatment of Abdominal Pain after Egg Retrieval”). 2. Patients with polycystic ovary syndrome need to enhance fetal preservation treatment because of the increased risk of miscarriage after pregnancy due to inadequate endocrine function.