Beta-xylosidase mutant and use thereof

The invention discloses a beta-xylosidase mutant and a use thereof. The beta-xylosidase mutant has an amino acid sequence as shown in SEQ ID NO:1. The mutant enzyme has high xylose and glucose tolerance compared with non-mutated beta-xylosidase, and has wide use in degradation of xylo-oligosaccharide.