Vitamin B2 (chemical formula :C17H20N4O6, formula 376.37) is also called riboflavin, slightly soluble in water, in neutral oracidic solution heating is stable. It is a component of the xanthase auxiliary group in the body (xanthase plays a role inhydrogen transmission in biological REDOX). When lacking, it will affect the organism's biological oxidation and cause metabolic disorders. Its lesions are mainly manifested as inflammation of the mouth, eyes and external genital parts, such as stomatitis,cheilitis, glossitis, ocular conjunctivitis and scrotal inflammation, so this product can be used for the prevention and treatmentof the above diseases.