Macadamia nut, alias: Queensland chestnut, macadamia nut, macadamia nut and Queensland nut, is a kind of tree nut native to Australia. Macadamia is an evergreen tree and a dicotyledonous plant. The crown of the tree is tall, with 3-4 leaves in whorls, lanceolate, leathery and smooth, and the edges are spiny and serrated. Racemes are axillary, with beige flowers, round fruit, leathery fruit, hard endocarp and beige to light brown seeds. Suitable for growing in mild, humid and windy areas. Among many dried fruits in the world, macadamia nuts have the highest economic value and have always enjoyed the reputation of "king of dried fruits". Distribution: Eastern Australia, New Caledonia, Sulawesi, Indonesia. In addition, macadamia nuts have high nutritional value and medicinal value.