MPL is an ideal tool for large-scale monitoring atmospheric aerosol profile and cloud. For the current reflecting coaxial MPL, there are still some shortages such as its high cost and the limited ability against the environment changes. A novel coaxial lidar (MPL-T) is developed in our laboratory. It is compact,stable and low in cost. The design of the MPL-T is introduced. The testing results are described and compared with a reflecting coaxial lidar system.