The invention relates to a technology for increasing xylanase yield of polysaccharide production using auricularia auricula. The technology is characterized in that a culture medium is prepared by, by weight, 10500-9500 parts of xylan, 1500-2500 parts of peptone, 1500-2500 parts of yeast extract, 1100-900 parts of K2HPO4, 500-600 parts of MgSO4.7H2O and 300-500 parts of KH2PO4; culture conditions includes: culture temperature is 25-28 DEG C, pH is 7.5-9.0, culture time is 20-30 days, and rotation speed is 100-300r/minute. The inducer in the culture medium can induce enzyme synthesizing and increase enzyme yield. The technology for increasing the xylanase yield of the polysaccharide production using the auricularia auricula has the advantages that the xylanase yield can be increased evidently, additional value of the actual xylanase production is increased, cost is lowered, and economic benefits are increased.