▎ 摘　　要

NOVELTY - The preparation method of Inonotus obliquus crude extract involves adding I.obliquus and graphene to a container and then uniformly mixing, crushing the mixture and then processing, extracting the mixture, and concentrating. USE - The method is useful for preparation of I.obliquus crude extract (claimed). ADVANTAGE - The method enables economical preparation of I.obliquus crude extract with high yield and excellent synergistic effect and storage stability. The I.obliquus crude extract is rich in polysaccharide. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for I.obliquus crude extract prepared by the method.