Using cellulase producing bacteria from liquor fermented grains as study object,physiological and biochemical characteristics such as cell aspect ratio,sugar fermentation experiments,starch hydrolysis experiments,and cellulase activity of cellulase producing bacteria was measured,and a correlation between the physiological and biochemical characteristics and cellulose enzyme activity was studied using correlation analysis and principal component analysis.The results of correlation analysis indicated that there were different degrees of correlation among indicators of physiological and biochemical characteristics,and between cellulase activity of cellulase producing bacteria and indicators of physiological and biochemical characteristics.The results of principal component analysis indicated that cellulase activity had a clear negative correlation with cell aspect ratio and producing acid using glucose,while had a positive correlation with starch hydrolysis,producing acid using lactose and citrate test indicators.