The role of rice is mainly as a staple in the daily diet, providing the body with a large amount of carbohydrates, while supplementing the role of a certain amount of protein, but does not have the efficacy and effect of drugs. Rice contains about 75% carbohydrates, 7%-8% protein and 1.3%-1. 8% fat. Carbohydrates in rice are mainly starch, which is a kind of macromolecular carbohydrates that can be decomposed into glucose quickly and efficiently in the human body to provide energy for various life activities of the human body. The protein contained in rice is mainly gluten, as well as rice gelatin protein and globulin, and the digestibility of protein in rice is as high as 66.8%-83.1%, which is one of the higher proteins in cereals. And the fat in rice contains linoleic acid content is also high, usually 34%. It should be noted that diabetics should eat less rice to avoid blood sugar fluctuations.