The chemical composition of essential oils, fatty acids and unsaponifiable of the limbs, foliars sheaths and rhizomes of Siphonochilus aethiopicus were studied by GC/MS. In petroleum ether extracts, the lipidic fractions are marked by significant rates (7.41 to 23.45 %) of fatty acids in C18. The majority of unsaponifiable compounds from the limbs, foliars sheaths and rhizomes of S. aethiopicus are essentially consist of terpenoïds accompanied by heneicosane (6.2 to 21.6 %). Otherwise, S. aethiopicus contains varied rates of catechic saponins, tanins and leucoanthocyanes in its organs.