Atmospheric aerosol plays key roles in the climate change,atmospheric environment and human health. Remote sensing is an important approach to obtain information of temporal and spatial distribution of aerosols. Due to its non-destructive, instantaneous,entire atmosphere monitoring capacity,aerosol remote sensing has been applied in many fields,like environmental protection and meteorology. This paper introduces the equipment,observation parameters and related studies of the atmospheric aerosol remote sensing study supersite (Beijing) of Chinese Academy of Sciences and illustrate typical applications in four areas. ① Comprehensive remote sensing observation focusing on dust and fog-haze pollution cases. ② Extension of optical remote sensing to research frontiers,like aerosol chemical composition estimation. ③ Methods for obtaining key environmental parameters,e. g. PM_(2.5) near the surface. ④ Joint active and passive remote sensing of vertical distribution characteristics of atmospheric particulate matters. The combination of multiple instruments of aerosol remote sensing supersite can reinforce the comprehensive observation and analysis of atmospheric aerosols,providing a synthesized data support for environmental studies.