Liver cell is an important one of the body's cells, secreting, detoxification, excretion, biotransformation and other functions. Chitosan oligosaccharide has a strong adsorption, adsorption of the body of harmful heavy metals and other toxins and excreted, to reduce the damage to the liver toxin. It can repair the damaged liver cells, and promotes the generation of antibodies to hepatitis C, hepatitis. It with positive charge characteristics can chelate fat, increase enzyme activity, prevent cholesterol and neutral fat rises, prevention of fatty liver.