NOVELTY - A Rhizoma anemarrhenae polysaccharide powder extract chemical composition is prepared by washing R. anemarrhenae raw material, adding distilled water and allowing to stand for 6-12 hours, cutting raw material into 75 thick slices, heating chopped raw material and performing extraction for 2 times with 5% ethanol, filtering, combining extracts, decompressing and recycling ethanol, concentrating to obtain alcohol concentrated solution, subjecting solution to macroporous resin adsorption and extracting concentrated solution, discarding water eluate, and combining eluents.    USE - Preparation of Rhizoma anemarrhenae polysaccharide powder extract chemical composition (claimed).    ADVANTAGE - Preparation process is non-toxic, environment-friendly, safe, simple, and easy.    DETAILED DESCRIPTION - A Rhizoma anemarrhenae polysaccharide powder extract chemical composition is prepared by washing R. anemarrhenae raw material, adding distilled water and allowing to stand for 6-12 hours, cutting raw material into 75 thick slices, heating chopped raw material and performing extraction for 2 times with 5% ethanol, filtering, combining extracts, decompressing and recycling ethanol, concentrating to obtain alcohol concentrated solution, subjecting solution to macroporous resin adsorption and extracting concentrated solution, discarding water eluate, combining ethanol eluents, decompressing and recycling ethanol, concentrating, decompressing and drying to obtain mother saponin extract in which saponin content in extract is greater than or equal to 50 wt.%, dissolving mother saponin extract into distilled water, adding acid, heating, hydrolyzing, neutralizing hydrolysis liquid with alkali solution, extracting through chloroform or ethyl acetate aglycone, recovering solvent, vacuum drying to obtain total mother saponin extract in which saponin content in extract is greater than or equal to 80 wt.%, adding distilled water into total mother saponin extract, heating, refluxing, and extracting for 2-3 times, filtering, combining filter liquids, subjecting to reduced pressure, concentrating to obtain concentrated solution, adding 95% ethanol solution into concentrated solution until alcohol content is 75-85%, stirring to mix components, allowing to stand for 1 night, filtering, collecting precipitate, centrifuging or filtering, decompressing and vacuum drying precipitate to obtain product with polysaccharide content of greater than or equal to 50%.