The character and the component of HYDRUS-1D /2D software were introduced.And the process of snowmelt infiltration in Gurbantunggut desert was taken as an example.The change process of soil water content from the stem for different distances in thaw and longitudinal dune was simulated by the software of HYDRUS-1D /2D.The results were tested by measuring data.And the simulation effect was good.Moreover,the operation steps and the advantage of the software of HYDRUS-1D /2D were summarized..