Background: Functional ovarian cysts (follicular and corpus luteum) are a common gynaecological problem among women of reproductive age worldwide. The aim of the present study was to compare the different modalities of functional ovarian cyst management i.e. expectant management and combined oral contraceptive pills (C.O.P) to know if combined oral contraceptive pills are needed in the management of functional ovarian cysts in reproductive aged women. Methods: One hundred eighteen patients with a probably functional ovarian cyst based on ultrasound criteria (unilateral, 2.5-6 centimetres in diameter, thin wall, unilocular without internal echoes and no solid parts) were randomly allocated into two groups after giving informed consent: Group A: women who will be managed expectantly. Group B: women who will be given combined oral contraceptive pills.Women managed by either of the two modalities (Group A and Group B) will be followed up by transvaginal ultrasound monthly for three successive months to evaluate the size, and location of the functional ovarian cyst. Results: At the beginning of the study, the two groups were comparable with respect to age and ultrasound criteria of their functional ovarian cyst we found after 3 months remission in 46 (78.0 percent ) women in group (A) and50 (84.7 percent ) women in group (B). Conclusion: There is no proven advantage in the use of combined oral contraceptives.