Intestine-clearing dietary powder is a kind of indigestible carbohydrate, which can be divided into two categories: water-insoluble fiber and water-soluble fiber. Water-soluble dietary powder is soluble in water and viscous, which can absorb a lot of water in the intestine, keep the feces soft, effectively activate the antibacterial activity in the intestine, promote antibacterial proliferation and create a healthy ecology in the intestine.