LiDAR has been widely used in early warning detection, guidance, fuze and other technologies in recent years because of the advantages of high detection accuracy, low power consumption, small size and easy equipment. However, with the various complex scenarios encountered in actual combat applications, complex conditions such as enemy confrontation, jamming, and the emergence of new combat technologies, LiDAR has encountered a series of problems that need to be solved urgently. The urgent problems of LiDAR encountered in the practical applications and the urgent needs for the development of LiDAR in the future were summarized. To solve these problems, plenty effort had been devoted to various exploration, but the conventional detection methods and technologies had encountered the bottleneck of development. It was difficult to effectively solve above problems. Therefore, based on the conventional LiDAR, combined with quantum and other new technologies, LiDAR had been upgrading to the next generation of new quantum LiDAR. The work of a variety of new quantum LiDAR systems of domestic and overseas was summarized. Analyzing the research results will help to deeply understand and grasp the current research status and problems of quantum LiDAR, and lay a foundation for the future development of quantum LiDAR.