Aerosol and Carbon dioxide Detection Lidar (ACDL), is the main payload of the National Civil Space Infrastructure dedicated Atmospheric Environment Monitoring Satellite (DQ-1). The mission of ACDL lidar is to measure the high-resolution vertical profiles of global atmospheric aerosols and clouds, and obtain the optical characteristics of atmospheric aerosols and clouds, then study their impact and role in monitoring air quality and global climate change. The major motivation is to measure the global atmospheric CO₂ column concentrations all the day with high accuracy, then providing important data for the determination of CO2 sources and sinks. The ACDL lidar payload was successfully launched on April 16, 2022, and the CO₂ column concentrations and aerosols profiles were measured simultaneously with high accuracy by the same lidar for the first time. It was the first spaceborne carbon dioxide detection lidar and the first high spectrum resolution lidar (HSRL) in the word.