The aim is to assess the application of ultrasonography and Doppler inthe evaluation of ovarian reserve in management of infertility.Methods: Transvaginal ultrasound and Doppler examination wereperformed to the selected 30 patients Results: An increase of ovarianvolume in PCOS patients and decreased after induction of ovulation, adecrease of AFC and increased after induction, PI and RI of uterine arteryincreased in PCO and decreased after induction , PI and RI of ovarianartery decreased in PCO and increased after induction ,Ovarian stromalblood flow indices were insignificant. Conclusion: ultrasonographyand Doppler were proved to be important tools for prediction of ovarianreserve