Peanut oil, that is, edible oil squeezed out of peanut kernels, is light yellow and transparent, has the flavor of peanuts, and is a major edible oil in the daily life of the Chinese people. It mainly produces various provinces in Central China and Fujian and Anhui. [nutrient content] Each 100 grams of peanut oil contains about 0.1 grams of water, energy is 3763.9 kJ, 99 grams of fat, 0.6 grams of carbohydrates, 7.64-58.7 milligrams of vitamins, and various amounts of calcium, phosphorus, iron, zinc and other substances. The fatty acids in peanut oil are beneficial to the human body, of which more than 80% are unsaturated fatty acids, oleic acid is 412%, and linoleic acid is 376%. The saturated fatty acids such as palmitic acid, stearic acid, and arachidic acid, and about 19.9% ​​of alcohols, phospholipids, choline, etc. [Doctor's point of view] Peanut oil is easily absorbed by the body and has the function of degrading cholesterol. It can protect the blood vessel wall and prevent thrombosis, thus it is helpful to prevent arteriosclerosis and coronary heart disease. It is one of the ideal edible oils and fats for the elderly. Peanut oil also has the effect of delaying brain function decline. When eating peanut oil, beware of the toxicity of aflatoxin to the human body caused by the inaccurate choice of materials, only special extraction techniques can be used to avoid this hazard.