NOVELTY - Arabinose and xylose are co-produced from high-purity xylo-oligosaccharide by cleaning and size-mixing hemicellulose-enriched biomass, adding xylanase to perform enzymolysis, separating and purifying enzymolysis liquid to obtain xylo-oligosaccharide mixed sugar solution with mass concentration of 1-6% consisting of xylose, arabinose, heptose, and other macromolecule substances, concentrating mixed sugar liquid to mass concentration of 50-70%, performing chromatographic separation using molecular size to separate, and successively increasing according to molecular weight.    USE - Biological preparation of arabinose and xylose co-produced from high-purity xylo-oligosaccharide (claimed).    ADVANTAGE - Energy consumption is reduced, product yield is improved, discharged pollution is reduced, and preparation method is environment-friendly.    DETAILED DESCRIPTION - Arabinose and xylose are co-produced from high-purity xylo-oligosaccharide by cleaning and size-mixing hemicellulose-enriched biomass, adding xylanase to perform enzymolysis, separating and purifying enzymolysis liquid to obtain xylo-oligosaccharide mixed sugar solution with mass concentration of 1-6% consisting of xylose, arabinose, heptose, and other macromolecule substances, concentrating mixed sugar liquid to mass concentration of 50-70%, performing chromatographic separation using molecular size to separate, successively increasing according to molecular weight, separating to obtain AD phase which is monosaccharide mixing liquid rich in arabinose and xylose, concentrating high-purity xylo-oligosaccharide mixed solution to obtain BD phase which is high-purity xylo-oligosaccharide syrup liquid product, concentrating and drying to obtain high-purity xylo-oligosaccharide powder containing heptoses or functional saccharides with molecular weight higher than that of heptoses, mixing CD phase after concentrating with cellulosic raw material, drying and crushing to prepare functional fiber feed, removing glucose in AD phase via yeast fermentation, removing impurity, purifying and concentrating, performing chromatographic separation to obtain high-purity xylose liquid and arabinose liquid, concentrating xylose liquid, crystallizing, separating and drying to obtain xylose crystal, concentrating arabinose liquid, crystallizing, and separating and drying to obtain arabinose crystal.    DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart of the preparation of arabinose and xylose co-produced from high-purity xylo-oligosaccharide. (Drawing includes non-English language text).