Walnut, scientific name is Juglans regia.In the international markets with almond, cashew, hazelunt together are known as four nuts in the world. Its footprint is a mass of around the world, mainly in America, Europe and a lot of places in Asia. In a foreign country, walnut known as "Hercules foodstuffs", "nutrient-rich nuts," "puzzle fruit"; and"Long live the Son," "longevity fruit", "dependent on the treasure" of the name. at home.Walnut has been revered by more and more people, because of it contains rich of nutriment and the outstanding capability.