[Objective]The aim of the research was to study the screening,isolation of cellulose decomposition microorganisms and the optimization of enzyme-producing.[Method] Samples with efficient degradation ability for cellulose were isolated from soil beneath stalk-stacking,sludge beneath stagnant papermaking effluent and fresh bovine stomach,intestine,warmed manure.After measured the hydrolyzed circle caused on plates of congo red dying,determined the rottrn change of filter paper,primary screened with lost rate ...