In this paper, the application of airborne lidar in engineering survey and geological survey is studied. Combined with the actual work of pipeline engineering, aerial photogrammetry technology and airborne lidar technology are used to measure long-distance pipeline. Through the analysis of lidar flight, ground control survey, laser point cloud data processing and DEM generation image data processing and DOM generation, digital line drawing (DLG) production and so on, the corresp onding product results were obtained. In the long-distance pipeline measurement, the UAV airborne lidar technology can replace the traditional measurement method. The application of this technology can effectively ensure the quality and duration of survey and design, and the product quality, accuracy and effect to meet the requirements.