Oats is a kind of food which has all sorts of nutrition.This paper mainly discussed nutritional ingredients and function of health protection of oats,simply introduced the use of it's functional ingredients,for developing natural resources rationally and efficiently.Oats are very nourishing.The oats may reduce the cholesterol of the body and to reduce the blood glucose because of its rich protein,fat,soluble diet fiber and saponin.It was very significance to study the improving of the food flavor,utilizing all the parts of the oats,and processing the functional foods.