This paper addresses the problem of the lack of single point cloud data for archeological site data archiving and model reconstruction, using the ruins of Banteay Srei in Angkor, Cambodia as a case study, and proposes a complete and efficient digital recording and reconstruction plan. By combining the ground-based lidar point cloud and the UAV-image visual point cloud, the key issues, such as the registration and fusion of the laser and the visual point clouds, and model construction and repair in the model reconstruction process can be solved, and a three-dimensional model of the target object obtained. Based on this, the proposed model application can produce a scene-roaming animation and vertical profile view that can provide an enhanced static and dynamic data basis for the protection, restoration, and research of the Angkor Banteay Srei. The proposed scheme can also provide data foundation and technical reference for data collection, digital archiving, data analysis, scene display, and relic restoration for ancient heritage protection, and further promote the application of the lidar technology to these fields.