Polycystic is also known as polycystic ovary syndrome, polycystic ovary syndrome natural conception is not easy to conceive twins, ovulation treatment is more likely to conceive twins, but not absolutely. Polycystic ovary syndrome patients have multiple sinus follicles in the ovary, but the hypothalamus-pituitary-ovarian axis secretion dysfunction, can not form the luteinizing hormone peak, follicular development disorders, can not form mature follicles, can not be normally ruptured and discharged, the majority of patients can not be naturally conceived, even if the normal ovulation of the conception, but also not easy to carry twins. Polycystic ovary syndrome has the need to get pregnant, can not be naturally conceived under the guidance of the doctor to take ovulation stimulation medication, such as clomiphene citrate tablets, letrozole tablets, etc., ovulation stimulation treatment may be at the same time two or more follicles mature discharge, it is easy to conceive twins. Patients with polycystic ovary syndrome should consult a doctor in a timely manner and standardize the treatment under the guidance of the doctor.