UAV airborneLiDAR measurement technology is a high-tech surveying and mapping technology that takes UAV as a flying platform and integrates laser ranging，positioning，inertial navigation and photogrammetry functions into one，which can better realize the integration of survey and design. It is a full-day，efficient operation compared to traditional mapping，and has the advantage of overcoming the impact of vegetation cover to a greater extent，and is suitable for data collection in complex terrain areas such as high mountain valleys，and has received wide attention from the industry in recent years. Combined with the application of this technology in Qianwei navigation-power junction，we explore the value of its application with a view to better integration with project production in the future.