Abstract: The Liupan Mountains are located in the eastern extension of the Qinghai-Tibet Plateau, connecting the north and south of Mountain Qinling Ranges at 200 km long, the watershed connection average elevation of 2500 m, the highest main peak elevation of 2942 m. The overlapping canyons in the southern part of the Liupan Mountains are the main origin of the Wei River, and two other rivers originate from there. The north-south gable formed by the Liupan Mountain Range becomes complicated for different types of weather processes, especially the surface water vapor field and air flow field in the process of terrain cloud formation, which form unique orographic cloud characteristics under the influence of mountain terrain. Therefore, in the National Weather Modification Operating Ability Engineering Project in Northwest China (NWMPNW) to set an experiment and test projects, terrain cloud natural precipitation characters and rain enhancement test in the Liupan Mountains. In the ground operation capacity of rain enhancement, operation command system of weather modification, cloud physics test base and other aspects of the test, to provide or verify engineering design, to solve the construction tasks in the implementation and operation of the technical difficulties and related problems, to achieve the scientific application of the equipment and facilities built by NWMPNW, to play the best benefits of engineering construction. This paper introduces the experiment of precipitation enhancement technology of the Liupan Mountains topography cloud. It’s included in the experiment design, scheme, process and results that could be for weather modification operating facilities in site design and adjustment. The results of experiment obtained the classification of the Mt.Liupanshan topographic clouds and the characteristic of deep convective cloud development. It can provide the technical basis for site location design and adjustment for the construction of other projects in middle, southeast and southwest in China.