Aiming at the region of 33. 5° N-34. 5° N on the satellite transit route, we compare the aerosol vertical distribution characteristics during clean period, haze, dust, and pollution caused by fireworks based on CALIPSO satellite laser radar data. The results show that, in the sunny day, most of aerosols are clean continental aerosols at high altitude; in haze, most of aerosols are polluted continental aerosols whose backscatter and extinction are strong, and most of aerosol particles are spherical particles...