It was found that activities of cellulase and pectolytic enzyme produced from Curvularia lunata,were significantly affected when the pathogen inoculated on various maize germplasms with different resistant levels.Isolate 98-07,which inoculated on resistant germplasms for single generation,was induced relatively higher average cellulase activity(7.99 U/mL) than that induced on susceptible germplasms(4.91 U/mL).By consecutively inoculating low pathogenicity isolates C107 and WS18 on resistant inbred line Shen135 for 5 generations,we found that their pathogenicity improved generally as the increase of generations,and simultaneously their cellulase activities were also enhanced(C107∶32.0%;WS18∶72.2%).The data indicated that there is a significant correlation between isolate cellulase activities and the changes of its pathogenicity(C107∶r=0.916;WS18∶r=0.905) induced specifically on resistant germplasms. It was found that activities of cellulase and pectolytic enzyme produced from Curvularia lunata, were significantly affected when the pathogen inoculated on various maize germplasms with different resistant levels. Isolate 98-07, which inoculated on resistant germplasms for single generation, was induced relatively higher average Cellulase activity (7.99 U / mL) than that induced on susceptible germplasms (4.91 U / mL) .By consecutively inoculating low pathogenicity isolates C107 and WS18 on resistant inbred line Shen135 for 5 generations, we found that their pathogenicity improved generally as the increase of generations, and simultaneously their cellulase activities were also enhanced (C107: 32.0%; WS18: 72.2%). The data indicated that there is a significant correlation between isolate cellulase activities and the changes of its pathogenicity (C107: r = 0.916; r = 0.905) induced specifically on resistant germplasms.