Banana peel was used as a carbon source to produce cellulases and cellobiase in shake flask cultures by A. niger.  Peak cellulases and cellobiase activities were obtained on the 6^th day of fermentation.  The temperature and pH influenced the yield of enzymes.  The maximum cellulase activities were recorded at 30°C and pH 5.0.  The maximum rate of enzyme activities was obtained when A. niger was grown on 1.5% banana peel.  Deprivation of ammonium sulphate, peptone or nitrogen source as whole inhibited cellulolytic enzyme formation.  The maximum enzyme activities were recorded at 40°C except cellobiase, which had maximum activity at 30°C.  The optimum pH of CMCase, FPase and cellobiase was 5.5, 6.5 and 5.5, respectively.  The maximum CMCase and cellobiase activities were detected after 1 h, whereas the maximum FPase was detected after 16 h.  More than 50% of CMCase, FP-activity and cellobiase retained at 60, 70 and 60°C, respectively.