In this paper，the Anusplin model is applied to interpolate precipitation data in diferent terrain representative area（Mountain area：Ganzhou city；Hilly area：Ji'an city；Plain area：Nanchang city）according to precipitation data of main rainfall process from 2014 to 2019 under three scenarios of 500m dem，1km dem and 2km dem.Results show that the ANUSPLIN model is suitable for precipitation interpolation in Jiangxi province，and the interpolation accuracy can reach high level.In the same DEM Resolution simulation scenario，the descending order of precipitation interpolation accuracy of anusplin model is plain area，hilly area，mountain area.The 1 km resolution dem is more suitable for precipitation interpolation in Jiangxi province.