Coriolus versicolor rich protein, fat, polysaccharides, peptides polysaccharide, glucan, lignin, amino acids and other inorganic salts and so on. Versicolor PSK is the fruiting body extract the main active ingredient: the molecular weight of more than 100,000, which is to contain β-key glycoside glucan, and is measured β (1 → 3) and β (1 → 6) D keys, and mannose, xylose, galactose, arabinose and rhamnose. At the same time, a combination of polysaccharide chain of small protein molecules (peptides) composed of proteoglycan (psp)