Lidar point cloud and visible image fusion technology, by integrating three-dimensional point clouds with two-dimensional texture and color information, can provide a richer and more accurate data foundation for environmental perception. Compared to conventional LiDAR, single-photon LiDAR offers advantages such as photon-level sensitivity and picosecond-level timing precision, enabling high-precision three-dimensional point cloud imaging over long distances and in low-observability scenarios. The fusion technology of single-photon LiDAR with visible images provides a new pathway for addressing target recognition and localization challenges in complex environments. This paper introduces the fundamental principles of conventional/single-photon LiDAR systems and image fusion technology, analyzes the feature differences between conventional/single-photon LiDAR and visible images as well as the issue of image registration, elaborates on the research and application status of fusion technology between conventional/single-photon LiDAR and visible images, and finally summarizes and prospects the current state of conventional/single-photon LiDAR and visible image fusion technology.