A system of atmospheric surveillance is brought forward by studying the spectra of gas plasma induced by a pulsed Nd:YAG laser. The system can avoid shortcomings of other existing air pollution detection methods, and carry out an on-line quantitative analysis. By adjusting the experimental setup, the concentrations of pollutions in the air can be tested. The primary plasma spectra evolution is presented. The method can be also applied in remote controlling the particular components in certain condition.