The improvement of maize hybrids with drought tolerance is one of effective approaches to reducing the yield loss caused by drought.The yield is one of the important index for screening drought tolerant maize hybrids.After grain yields of 36 maize hybrids were analyzed and the features of different screening index were compared,the results showed that for screening hybrids with drought tolerance,mean productivity（MP）,geometric mean productivity（GMP）,drought index for varieties（DTIv） and drought tolerance index（DTI） were the most important indexes,and drought index for varieties（DTIv） was better than drought tolerance index（DTI） in different environment and places.