Aiming at the complex structure and high design cost of traditional meter scattering lidar, a portable meter scattering lidar system for detecting atmospheric aerosols is proposed. First, the optical system structure of coaxial transceiver is designed, and then the photoelectric detector is designed independently. Finally, based on the system structure, a movable meter scattering lidar experimental platform is built to preliminarily detect atmospheric aerosols. The experimental results show that after filtering with the designed power filter, the original ripple voltage range of switching power supply is reduced from 0.1 V to 0.0 1 V, and the noise amplitude is controlled at about 0.1 V. The oblique detection distance of the system in the day and night is 4.5 km and 6 km respectively, which can monitor the aerosol in a specific area in real time.