With the rapid development of autonomous driving and intelligent transport systems, vehicle-mounted LiDAR has become a key technology in this field. As a core component of autonomous driving, the efficient operation and accurate measurement of vehicle-mounted LiDAR play a decisive role in the overall performance of the system. Firstly, the basic concept of vehicle-mounted LiDAR and its structural characteristics are introduced. Then, the importance of various evaluation parameters and hardware parameters in evaluating the performance of vehicle-mounted LiDAR systems and their specific impact on the system performance discusses are discussed in detail. And the research progress of various parameters is summarized, and finally a series of ideas on optimizing the performance of vehicle-mounted LiDAR are concluded and the future development trend of vehicle-mounted LiDAR is outlined.