The echo signals of the CCD side-scattering lidar under different wind speed conditions were analyzed. According to Mie scattering theory and CCD side-scattering LiDAR principle, the correlation between aerosol concentration and its side-scattering light intensity is determined. By considering the relationship between aerosol concentration and wind speed, the echo signals of side scatter lidar under different wind speed conditions are analyzed. By comparing the experiments under two conditions of axial fan wind and natural wind, it can be found that when the wind speed is in the range of 1~4.5 m/s, the aerosol concentration increases with the increasing of wind speed; otherwise when the wind speed is in the range of 4.5~6 m/s, the aerosol concentration decreases with the increasing of wind speed.Normalizing the results, conclusions are drawn that when the wind speed are in the range of 1~4.5 m/s, the side-scattering light intensity increase by 3.7% and 3.9% with the wind speeds increase by 1 m/s in the conditions of axial fan and natural wind. When the wind speedsare in the range of 4.5~ 6.0 m/s, the light intensity decreased by 3.1% and 3.8% with wind speeds increases by 1 m/s in the two conditions, and the trend exists in all wind coming directions of natural wind.