The atmospheric aerosol has important influence to atmospheric radiation and light propagation,but scale height is the key parameter which reflects aerosol height distribution. So using continuous spectrum sun-photometer and forward scatter visibility sensor, we measured the atmosphere column optical characteristic and plan extinction coefficient on earth on the base of two experiments, respectively. The characteristic of aerosol scale height of visibility light-wave is obtained: with wavelength increasing, aerosol scale height declines;generaly, aerosol scale height in winter is higher than it is in summer for the place of experiment condition;the more wavelength is high, the more aerosol scale height is little.