Abstract: Based on the theoretical analysis of atmospheric boundary layer meteorology and climatology and mesoscale numerical simulation,this paper uses radiosondes data and lidar data on typical terrain,and 9 wind environment regions are divided according to the overall wind power potential within the height of wind energy utilization. The wind environment region with the highest annual mean wind environment index is the northern ventilation channel,followed by the Northeast Plain,and the lowest is the downstream areas of the Qinghai-Tibet Plateau. It is found that the vertical variation of the mean wind speed in stable condition within the height of wind energy utilization is in a two-layer distribution pattern. The average wind speed of the lower layer increases with height by 2-5 times bigger than that of the upper layer. The vertical variation of wind speed in the lower layer depends on the surface characteristics,and the upper layer is affected by the local circulation caused by the large terrain in the upstream,therefore led to the difference of wind energy resource characteristics in different wind environment areas. Finally,suggestions for the calculation method of average wind profile under different terrain conditions are given. The conclusion can provide scientific support for the expansion of wind energy resources assessment theory and numerical simulation,the wind farm siting and the design of wind turbines suitable for complex terrain conditions in China.