Abstract: Ovarian stimulation treatment is an important part of assisted reproductive techniques. It includes ovulation induction and controlled ovarian stimulation. They are widely used in infertility treatment. Different ovarian stimulation medications and protocols have achieved considerable ovulation, however, they can influence endometrium receptivity resulting in different pregnancy outcomes. This review stated the influence of different ovarian stimulation medications and protocols on endometrium receptivity from the following aspects: morphology index, molecular biology index and so on.

Key words: Ovulation induction, Controlled ovarian stimulation, Endometrium receptivity, Reproductive techniques, assisted, Clomiphene citrate, Letrozole