Background; Poor ovarian responsiveness is a challenge met by many clinicians during COH, these patients usually have higher FSH level, lower levels of AMH and few oocyte retrieved. Aim and objectives; to assess the efficacy& safety of mild ovarian stimulation using CC& low dose of Gn with antagonist protocol in comparison to the conventional ovarian stimulation with mid-luteal GnRH agonist protocol in women with poor ovarian reserve undergoing IVF/ICSI cycles,