Beta Glucosidase is cellulose enzymes, which can act on the cellobiose or cellooligosaccharide assist exoglucanases and endoglucanases of the cellulose molecule completely hydrolyzed to glucose . In addition, β-glucosidase is also capable of acting on glycosyl atom or a hydrocarbon group and an aromatic group of the glycosidic bond between, so that the corresponding glycoside compound degradation generation ligand and glucose.