Abstract: The research has applied WRF 3.6.1 and the latest TopoWind scheme (hereinafter referred to as WRF_TopoWind) to simulate the mountain wind speed of Yunnan eastern and western parts in low latitude plateau of China.It has compared the 70m high wind speed of wind tower in Yunnan eastern and western parts to test WRF_TopoWind adaptability to low latitude plateau mountain wind speed.The analysis has found that in terms of wind speed trend simulation the east part is better than the west for the whole year,and the west part is better than the east about wind speed value simulation precision for the whole year.The simulation result of winter is the best,and the simulation result of spring and summer takes second place,while autumn simulation effect is relatively poor.Most of simulation effect is poor in precipitation case,but most of simulation effect is good in non-precipitation case.WRF_TopoWind is basically applied in the work and research on wind farm site selection and wind energy resource assessment of low latitude plateau mountain areas.