Abstract: To obtain atmospheric profile of the whole world，and solve the problem that environment monitor was always restricted to a certain area，a spaceborne atmospheric detection lidar was designed.This lidar working on satellite uses a 532nm and 1064nm dual-wavelength laser combined with polarization detection method to obtain profile，particle size，particle shape of aerosol and cloud，and can research the requirement of three-dimensional spatial distribution detection of clouds and aerosols around the world which will improve atmospheric monitoring system.The space-borne atmospheric detection lidar used ultra-stable laser resonator to get 110mJ laser output，and used space-borne plane etalon to get 40pm filter bandwidth，and used high-precision pointing controller that pointing accuracy of laser beam was less than 5μrad.Finally，the paper gives test data of atmospheric vertical profiles under 15km attitude obtained by a space-borne atmospheric detection lidar which shows dominant position of the lidar on atmospheric detection.

Key words: space-borne, atmosphere, dual-wavelength, polarization, lidar