Abstract: Based on the SRTM（Shuttle Radar Topography Mission） 90 m,USGS（United States Geological Survey） 30 s terrain elevation data and the actual altitude data of Qinghai meteorological station,the influence of different altitude data on the simulation accuracy of summer temperature and precipitation in Qinghai in 2014 was analyzed. The simulation results were tested by the meteorological observation data of the national basic observation data and mainly results indicated that: Compared with the actual station altitude data,the topographic data in model was generally on the high side,especially in the areas with higher altitude and larger terrain gradient. Compared with the original terrain data in model,except for the eastern part of Qinghai,the terrain data given by SRTM in most areas was increased. The use of SRTM data had little effect on the temperature,the introduction of meteorological station altitude data of Qinghai had a greater effect on the accuracy of the maximum temperature,the deviation of the simulated and measured data was significantly reduced in the areas with higher elevation in southern Qinghai and Qilian Mountains,as well as in the areas with larger terrain gradient in Huangnan and Hainan,the improvement of the simulated minimum temperature was not so obvious as the maximum temperature. Using of SRTM elevation data and actual meteorological station altitude data of Qinghai had comparatively improved the precipitation in the west central part of Qinghai and the eastern Qinghai.