Polycystic ovary syndrome is a very common type of patient in our fertility center, accounting for 1/3 of the total number of patients, some of whom are hirsute, obese, amenorrheic and infertile, but a significant number of patients are of normal weight and do not have hirsutism or amenorrhea. Polycystic ovary syndrome can be divided into two cases: one with markedly polycystic ovaries, amenorrhea, infertility, obesity, hirsutism, insulin resistance, scanty menstruation, high androgen levels, and various other endocrine disorders. The other type is simply polycystic ovaries with regular menstruation, no amenorrhea, infertility, hirsutism, and normal androgen levels. In the former case, weight reduction, administration of Daimler 35 to reduce androgen levels and oral metformin to reduce insulin resistance are needed before ovulation treatment, after which ovulation treatment can be performed. The cause of polycystic ovary syndrome is unclear, and its polycystic ovary status lasts for life.