Hydrogen possesses highly reactive physical properties, which may lead to fire and explosion accidents in cases of leakage. Based on the arrangement of point-type hydrogen sensors, employing Raman-Lidar telemetry technology can enhance noncontact, remote, and large-coverage detection of hydrogen leakage, thereby facilitating the rapid development of diversified hydrogen energy utilization scenarios and ensuring the safe and efficient utilization of hydrogen energy. First, an overview of the fundamental principles of gas Raman scattering is provided. Second, the research progress in Raman-lidar telemetry technology for hydrogen leakage is examined, both domestically and internationally, from two aspects: system structure and detection effect. Finally, the prospective applications of Raman-lidar telemetry technology in hydrogen leakage monitoring and detection are studied.