

DOI: 10.7672 / sgjs2024050001
The principle of ground 3D laser scanning technology is described, and the key progress of 3Dpoint cloud data acquisition and processing is introduced, the applications status of 3D scanningtechnology in underground space development and utilization, structural health monitoring, indoorengineering construction, quality testing and evaluation, cultural heritage protection and inheritance,smart city application, existing engineering renovation, construction progress tracking and other fields issorted. The advantages and disadvantages of the technology in different fields are analyzed, and thechallenges to 3D point cloud data storage management and computing analysis are pointed out, finally,the development trend of 3D laser scanning and point cloud processing is forecasted.