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In the past 20 years, women tend to delay pregnancies in order to achieve academic and professional careers, however, they fall into the problem of infertility. To combat this, couples either turn to assisted reproduction clinics, which are very expensive, or use inexpensive means such as the use of traditional herbs. This is the objective of our study; we tested a highly qualified medicinal plant, Maca (Lepidium meyenni) for its effect on fertility. We administered this plant to rabbits, divided into four groups, the first is the control, and the three others are subjected to a "Decapeptyl" hormone for a period of one week, in order to block their ovarian functions. Subsequently, we tried to treat this blockage by stimulation, on the one hand with the chemical molecule "Purugon" and on the other hand with Maca and we left a batch without stimulation. We compared their weight evolution and after sacrifice, we calculated the Gonad somatic (GSI) and Condition Factor (CF) maturity indices, we also made histological sections to observe the ovaries and the evolution of the oogenesis of the 4 lots. The results were promising; we noticed a positive effect of Maca on weight and indices of sexual maturity. Microscopic observations of ovary sections showed that the batch having consumed Maca had a beautiful structure of the ovary which is characterized by numerous follicles at different stages of development. this structure reveals a resumption of oogenesis after hormonal blockage. We have concluded that Maca is a plant that has great ovarian stimulation power. [ABSTRACT FROM AUTHOR]