Sugar is the main energy substance of human body, and more than 70% of the energy needed by human body is provided by sugar. It is also an important part of tissues and cells. Cereals are the main nutrients that provide sugar. Dietary fiber refers to the components in plants that cannot be digested and absorbed, and is an indispensable factor to maintain health. It can soften intestinal substances, stimulate gastric wall peristalsis and assist defecation. And reduce the absorption of cholesterol and glucose in the blood.