Method for extracting Macamide compound

The invention discloses a method for extracting a Macamide compound .The method includes the steps that Maca fresh fruit or dry fruit is taken, sliced, dried and smashed to obtain Maca powder; the Maca powder and organic solvent are mixed, ultrasonically extracted and centrifuged to obtain supernate; the supernate is evaporated to dryness, organic solvent is added for dissolving, and then an alkaline solution is added to conduct a reaction; reaction liquid is evaporated to dryness, water and normal hexane are added to conduct extraction, a normal hexane extraction layer is collected, and the Macamide monomeric compound is separated out .The obtained product is low in content of aliphatic acid and other impurities, the yield of the Macamide compound is improved, and the Macamide compound is high in purity and activity.