Hydrological processes are described in detail in modern land surface models. While water move vertically. It is proper to be used in plat zone more than mountainous region, where the water move laterally more than in vertical direction.High-resolution simulation become reality as the compute capability boosts. Lateral routing flow of surface water and subsurface soil water become necessary in land surface simulation in mountainous regions. Meanwhile, runoff is treated as a diagnose variable and does not take part in the water moving. Based on all of these, Noah model coupled with MM5 was enhanced. The evaporation of pond water and re-infiltration were taken into account in the land surface model and the overland routing and subsurface routing parameterization were added into land surface scheme. Routing module is linked with MM5 through the disaggregating/aggregating method. Then, the high-resolution atmosphere-hydrology coupling model suitable for mountainous regions was developed. With this developed atmospheric-hydrologic coupling model used, the rain fall event on June 23-25 , 2003 in Heihe River basin was simulated to study the feedback of land surface water cycle in atmosphere. It is indicated that the atmospheric fields were influenced by land surface water cycle process to large extent. Firstly, the soil moisture and evaporation increased after adding the land surface routing. Secondly, boundary layer stability is weaker. Then, the cloud water and rain water were affected. Precipitation simulation was also affected.