Abstract: Based on monthly temperature and precipitation data from 29 meteorological stations in Huaihe River Basin during 1951-2014,the spatial and temporal characteristics of January mean temperature and annual precipitation over Huaihe River Basin were studied by using linear regression,cumulative anomaly,Mann-Kendall test and spatial analysis methods.The results showed that:the January mean temperature over Huaihe River Basin presented a significant warming trend during the past 64 years,and the linear rate was 0.3℃/10a.The strongest warming trend occurred since 1986,and the abruptly changed in the year 1973.At decadal time scale,the warmest decade was observed during 1990s and the coolest decade was detected during 1950s.The annual precipitation over Huaihe River Basin showed a moderate decreasing trend during the last 64 years,with the linear trend amounting to-5.9 mm/10a.The lowest and highest decadal precipitation occurred in 2010s and 2000s,respectively.Relative to variations of annual average temperature from Huaihe River Basin,the time abrupted warming of January mean temperature was earlier,indicating that which was more susceptible than annual average temperature in response to global warming.0℃ isotherm in January and 800 mm isohyets during last 64 years were located on the north side of the Huaihe River,which was not coincidence with Qinliang-Huaihe Line.The mainly reason was that natural belt remarkably northward moved because of global warming.