In order to screen and identify cellulase strains in soil,the study cultures from five-point sampling collected from the farm soil of Chifeng University,isolates a cellulase producing strain,conducts morphological observation and sequencing on the cellulase producing strain,and identifies the strain as Cyberlindnera jadinii.The study tests cellulose degradation characteristics of the strain.The sterile filter paper strip can be degraded into white paste in the strain when inoculated into the filter paper strip disintegration medium on the 7th day,showing a good cellulose degradation ability,which provides a research basis for the further application of microbial degradation of cellulose.