[Objective] The aim was to further understand the chemical structure,composing components,physicochemical properties and biological activity of Mongolia tricholoma polysaccharide(MOP).[Method] After the MOP samples were hydrolyzed,its components were analyzed by the thin layer chromatography method and its structure was identified preliminarily by the infrared spectrum analysis and the nuclear magnetic resonance.[Result] Through hydrolysis,thin layer chromatography,infrared spectrum analysis and nuclear mag...