1. To adjust the metabolizing of fat Clinic experiments show that a proper sum of soluble fiber in small intestines can produce a layer of membrane, which can prevent the absorbing of fat in the alimentary canal and accelerate the excretion of lipoid compounds. So that it is able to adjust the sum of fat in blood and prevent blood vessel disease in heart and brain. 2. To lower the cholesterol Soluble dietary fiber can absorb bile acid, cholesterol variation material and other organic molecule, restrain the total cholesterol density level, decrease the bile acid synthesizing and absorbing, and lower the cholesterol level of the body blood and the liver to prevent and cure arteriosclerosis and cholecystolithiasis and to prevent heart and brain vascular diseases. 3. To cure constipation and prevent diarrhea Soluble fibers can preserve moisture, accelerate the peristalsis of intestines, soften and enlarge dejecta, and in the end expedite excretion. Obvious curative effect can be seen after 3day¡¯s use. 4. To enhance immunity ability. Since soluble fibers are good at preserving moisture, they can dilute the consistence of the harmful things in intestines and expedite excretion. Clinic practice proves that soluble fibers can prevent and cure cancer, particularly colon cancer, in some ways. 5. To improve the metabolizing of glucide Soluble fibers can reduce the absorption of glucide, while they themselves can not be absorbed. Low-sugar and low-heat food is helpful to diabetics. 6. To control the excessive taking of food Soluble fibers can help people to prevent excessive taking of food and accumulation of fat.