Aim: The aim of this study is to investigate the effect of polycystic ovarian syndrome (PCOS) on obstetric and neonatal outcomes. Materials and Method: The:This study was conducted as a randomized controlled prospective at Ankara City Hospital obstetric clinic between 2020-2021.Total included a total of 200 pregnant women (18-45 years), of whom 101 had PCOS and 99 were healthy controls.Demographic characteristics of the groups were analyzed. The systolic blood pressure, diastoic blood pressure,insulin resistance , ovulation induction, insemination and newborn admission rates of the pregnant group were evaluated. Maternal age, fetal birth weight, gravidity, parity, BMI, gestational age, gestational age according to ultrasound, women height, weight, (BMI), weight gained during pregnancy, hemoglobin values were were compared between both groups. Results:In terms of the rates of ovulation induction, insemination, and admission to the neonatal unit for follow-up in pregnant women with PCOS were significant different found.Pregnant women with PCOS had higher rates of ovulation induction, insemination, and admission to the neonatal unit for follow-up.It was observed that cesarean section rates were higher in pregnant women with PCOS. Conclusion:It should be consıdered that pregnant pregnants wıth PCOS are more lıkely to have a cesarıan sectıon and theır newborn's are more lıkely to be admıtted to the newborn unıt for follow-up .This situation should be taken into consideration in the management of pregnant women.