The cause of polycystic ovary syndrome is still unclear. It is thought that it may be related to endocrine dysfunction and hypothalamic-pituitary-ovarian imbalance. It may be caused by the effects of mental stress, medication and certain diseases, which cause the hypothalamus to lose its cyclic secretion of gonadotropin-releasing hormone, resulting in an imbalance in the ratio of gonadotropins secreted by the pituitary gland, causing the follicles to develop but not mature and not ovulate, becoming cystic follicles. The clinical manifestations have four major features: 1. Chronic non-ovulation: the manifestations are dysfunctional, less frequent, less menstrual flow, and even amenorrhea. 2. 2, infertility. 3, hirsutism: excessive androgens within cause hirsutism, so the distribution of hair has a masculine tendency, such as beard, chest hair, navel to pubic hair, as well as anal and limb hair increase, pubic hair thick, thick and black. 4. Obesity: almost 25% of patients will be obese. The relationship between obesity and polycystic ovary syndrome is complex and may be related to insulin resistance. Treatment: (a) treatment of infertility patients 1. medication to promote ovulation: clomiphene (clomiphene) is the drug of choice for PCOS; 2. surgical treatment: if medication is ineffective, each follicle can be punctured, electrocoagulated or lasered under laparoscopy, and estrogen and androgen levels then fall. 3, laparoscopic surgical treatment. (II) Correction of metabolic disorders