The major active components in Agaricus blazei includes polysaccharides and sterols. The Agaricus blazei β-glucan extracted with hot water possesses more potent activity of anti-carcinogenic and inhibiting the growth of tumor cell and absorbing the carcinogen. Besides, it could promote the flow of vital energy of human and bring down blood-glucose and blood-cholesterol as well as improving the arthroscleroses. The contents of β-glucan and mannose in the Agaricus blazei polysaccharide product produced in the Company are higher than that in other products produced in China