Abstract:The extraction process of wild blueberry polysaccharide was optimized by response surface methodology，and the decolorization process of polysaccharide was optimized.On the basis of single factor test，the three factors and three levels of enzyme addition，enzymolysis time and enzymolysis temperature were selected.The design experiment and result analysis were carried out by using Design-Expert software to obtain the method of enzymatic extraction of blueberry polysaccharide The optimum conditions were as follows：enzyme addition amount 0.57%，enzymolysis time 85 min，enzymolysis temperature 38℃，extraction rate 2.91%；the influence order of each factor was：enzymolysis temperature>enzyme dosage>enzymolysis time.