The invention provides aspergillus oryzae ZA151 and an application thereof. The aspergillus oryzae ZA151 is collected in a Guangdong Microbial Culture Collection Center, and the collection number of the aspergillus oryzae ZA151 is GDMCC No: 60472. The aspergillus oryzae ZA151 can effectively remove stench of raw oyster juice, comprehensively improve sensory requirements such as the color, the smell, the taste and the posture of finished oyster juice and increase the polysaccharide content of the finished oyster juice. The aspergillus oryzae ZA151 is applicable to large-scale industrial oysterjuice production and wide in application prospect.