By using the light intensity distribution of Gaussian beam under the steady-state thermal blooming condition,numerical analysis is done for light beam distortion by the steady-state thermal blooming under two conditions of without wind and wind.Without wind,the influence of thermal blooming for laser beam energy distribution of different transmission distance and different initial laser power is analysed;the influence of thermal blooming for near- field laser beam and far-field laser beam is analysed under wind condition,the influence of lateral wind speed for the light beam distortion is analysed.