Patients with polycystic ovary syndrome can prepare for pregnancy by losing weight through diet and exercise, lowering insulin levels, and inducing ovulation. 1. In patients with polycystic ovary syndrome, weight reduction is usually based on diet and exercise. Improving lifestyle, dieting and exercise can improve glucose tolerance and insulin resistance, lower blood lipids, and can indirectly improve reproductive hormones and clinical manifestations, but need to be persistent. 2. Lowering insulin level can be treated by weight loss and taking metformin under doctor’s supervision. Weight loss and insulin reduction are conducive to improving ovarian function and inducing ovulation. 3. Patients with polycystic ovary syndrome often have irregular menstrual periods and sporadic ovulation, which can lead to a decreased chance of pregnancy. The patient can be instructed by the doctor to take oral ovulation drugs, such as clomiphene to induce ovulation, and at the same time to increase the number of coitus during the period of ovulation, to increase the chances of pregnancy. If there is a delay in getting pregnant, further examination and treatment are required under the guidance of the doctor. In addition, during the preparation for pregnancy, patients can take some folic acid supplements to prevent fetal neurodevelopmental malformations. If the patient is still unable to conceive after positive lifestyle adjustments, early standardized treatment is needed.