Abstract: In this paper,the WRF model driven by MERRA2 reanalysis data was used to simulate and analyze the wind resources in Liangshan Prefecture,Sichuan Province in 2020,and the simulation results were tested with the data of typical wind measuring towers in Liangshan Prefecture. Then,the regional distribution of exploitable wind energy resources were deduced backward based on the 8%benchmark revenue return of wind farm development. The results show that the annual average wind speed is above 5 m/s at 100 m height in most areas of Liangshan,and the maximum wind speed area is generally located in the ridge. The best wind energy areas in Liangshan are mainly located in Huidong County and Ningnan County. Typical regions in Liangshan Prefecture are affected by the southwest monsoon,that is,the wind is strong in winter and spring,but weak in summer and autumn. The main wind direction presents a strong southwest wind state,and the change law of wind power density is basically consistent with the change of wind speed. The critical value of the average wind power density of exploitable wind energy resources in mountainous areas of Liangshan Prefecture is 258W/m~2,and these areas are mainly concentrated in Huili,Huidong,Ningnan,Butuo,Muli and Yanyuan County. The distribution map of exploitable area provides scientific reference for guiding the development of wind energy in Liangshan Prefecture.