The use of renewable biomass energy is critical to mitigating the global energy crisis and environmental pollution. As a rich but inedible ingredient, hemicellulose is a potential renewable biomass energy source that can be used to produce chemical products such as decyl alcohol, furan, tetrahydrofuran, furfural, etc. Its hydrolysate xylooligosaccharide in food and chemistry It has broad application prospects. Hemicellulose is a polysaccharide with a D- xylose residue as the main chain linked by a β- 1,4 glycosidic bond . The main chain is linked with various side chain substituents such as glucuronic acid, arabinose and acetyl. The hydrolysis of hemicellulose is a complete sugar molecule obtained by selective cleavage of CO bonds between adjacent sugar molecules. Xylooligosaccharide is a kind of functional oligosaccharide, which has wide application in chemical, food, medicine and other fields due to its unique physiological characteristics and physical and chemical properties. 
