Spectroscopic remote techniques are hi-tech atmospheric pollution mon-itoring with their special advantages over other methods in many aspects，such as high sensitivity multi-analytical，fast and on line supervision etc．Four spectroscopic methods are introduced in this paper： Fourier Transform Infrared Spectroscopy,(FTIR)，Diferetial Optical Absorption Spectroscopy(DOAS) Laser Long—path Absorption and Diferetia1 Absorption Lidar (DIAL) based on 1asers．Basic measurement principle．operation way，each advantages and shortcomes，and applicaion are also discussed．