The refined assessment of the distribution of wind energy resources under complex mountainous terrain in Guizhou has important guiding significance for the development and utilization of wind energy resources in Guizhou. Ceheng county is one of the key development and utilization areas of wind energy resources in Guizhou. Based on the observation data of 5 wind measuring towers in Ceheng County and the data of surrounding meteorological stations, the mountain wind energy resources in Ceheng county are simulated, analyzed and evaluated by using the Meteoryn WT hydrodynamics model software. The results show that the simulation error of the wind energy resources evaluation method based on wind measuring tower and WT numerical simulation is small, It is suitable for wind energy resource evaluation under complex mountainous terrain in Guizhou; The areas with good wind resources in Ceheng are mainly distributed on the higher ridges in Yangba Town, Zhelou Town and Yata Town in the middle and Pomei Town, Qingping Town, Weipang Town and Rongdu Town in the north, which have certain development and utilization value; Due to the unique geographical location and topography of Ceheng and the multiple effects of monsoon, the wind energy resources in Ceheng have obvious monthly variation characteristics, and the wind resources are better from November to May.