Obtaining high-accuracy optical property of atmosphere timely will lead to good results of atmospheric correction and real remote sensing image inversion. We have developed a multi-function Raman/Mie lidar system. Making use of this lidar, we can get the spatial distribution and the time evolution of many atmospheric parameters. In this paper, we studied the main factors affecting atmospheric correction, namely absorption and scattering by aerosols and several major atmospheric elements. Preliminary experimental results are described. These data are combined with sunphotometer data and another scanning Mie lidar data, integrated with the imagery from such as remote sensing of the Earth satellite to obtain the ground truth.