TOPMODEL is a semi-distributed model in which the predominant factors determining the formation of runoff are represented by the topography of the basin. In this paper we dealed with DEM information of Buliu river basin, extracting drainage network, sub-basin area, topographic index and distribution of runoff distance, and applied TOPMODEL in the basin. For the sake of comparison, the Xin'anjiang model was also applied in the basin. Here we analyzed the difference of simulation function due to the frameworks of the two models. The simulation results of the two models have little difference; moreover TOPMODEL realized the visualization of spatial source area distribution