Using multimodel ensemble mean results of 8 global coupled ocean-atmosphere models in the Fourth Assessment Report (AR4) of the Intergovernmental Panel on Climate Change (IPCC) by bias-corrected statistical downscaling method,possible changes of surface air temperature and precipitation over Huaihe River basin were predicted in future (2011-2040) relative to baseline (1961-1990) under SRES A2,A1B and B1 scenarios.The results indicate that (1) multimodel ensembles can reproduce a large-scale spatial distribution of annual,seasonal temperature and precipitation over the Huaihe River basin.It can also reflect better on monthly temperature and precipitation distributed processes within the year.Compared with the observations,the monthly temperature has a difference about 0.2℃ (expect winter),and the precipitation has a difference about 5% (except September).(2) The annual and seasonal temperature presents an upward trend under different scenarios.The annual temperature increases with a range of 0.85 1.12℃,while temperature in winter and spring increases more obviously than that in summer and autumn.(3) The annual precipitation increases with a range of 0.13% 5.24% in future,but the changes are not significant.Seasonal precipitation presents an increasing or decreasing tendency,however seasonal,interannual and interdecadal precipitation changes are more complex.The spatial pattern of precipitation varies obviously under different scenarios.