Walnut, formerly known as walnut and peach, is native to southeastern Europe and western and southern Asia. Walnut kernel is rich in nutrition, which is not only an ideal nourishing product, but also a "healthy friend" of dietotherapy. Walnut is mainly rich in fat, which contains linoleic acid glyceride, linolenic acid glyceride and oleic acid glyceride, which is beneficial to reduce the increase of cholesterol in blood and has a health care effect on patients with arteriosclerosis and cardiovascular and cerebrovascular diseases.