Based on the fact that there exists significant negative correlation between summer temperature and precipitation over the southeastern China,a drought index is appropriately constituted.Choosing monthly mean sea-surface temperature,500hPa height in the Northern Hemisphere,surface temperature over the Eurasian continent from the NCEP/NCAR reanalyses as predictors,the summer drought index calculated from the monthly mean precipitation and temperature of 160 stations in southeastern China collected by Beijing Meteorological Center,are predicted with ensemble canonical correlation(ECC) method.The results show that the ECC analysis is superior to the single factor canonical correlation analysis(CCA) in the spatial/temporal correlations between observed and predicted summer drought index fields,and the superensemble mean method has higher overall skill than the equally weighted ensemble mean method.