Abstract: By using the observation data of wind speed and direction of Pengzhou boundary layer observation tower, the diurnal variation characteristics of seasonal mean wind speed, seasonal prevailing wind direction and pollution coefficient in Pengzhou region were studied. On this basis, the strong wind weather in Pengzhou is selected as an example to verify the effectiveness of the inversion results of monthly classification method and wind speed interval method. The results show that except the prevailing westerly wind at the height of 10m in summer, the northeast wind is prevalent at each height in the other three seasons. The frequency of northeast wind at each height in autumn and winter is higher than that in spring and summer. The frequency of northeast wind increases with the increase of height in each season, and the corresponding average wind speed increases gradually. The maximum pollution coefficients at 10m height in spring and summer are in the west, and the maximum pollution coefficients at other heights are in the northeast. The minimum pollution coefficients at each height are mostly in the southeast or south. The pollution coefficient of each height in autumn and winter is greater than that in spring and summer, and the maximum direction is northeast. The minimum pollution coefficient of 10~20m is mostly in the south or southeast direction, and the minimum pollution coefficient of 60~90m is in the northwest direction. Pollution sources should not be laid in the west and northeast of Pengzhou Tower. Both of the two methods could effectively invert the near surface wind speed, the inversion effect of the wind speed interval method acquired a better performance over large wind speeds than that of the monthly classification method.