A cellulase-producing strain was isolated and identified and their enzymatic characters were analyzed. The selected strain straining with congo red was studied with the morphological,physiological and biochemical characteristics as well as 16 S rDNA sequence homology. Moreover,the effecting factors for the cellulase activity,such as optimal temperature,optimal pH,pH stability,and thermal stability and effects of metal ions were studied. Finally,the distribution of cellulase system was examined. The results ...