Proceeding of the Joint International Symposium on Deformatuon Monitoring. 2-4 November, 2011. Hong Kong. China. Report. Using three-dimensional laser scanner system to measure the Turtle Mountain Han tomb and obtained the point cloud. To the noise points and large holes on the surface, this paper first present an approach that based on the basic principle of least-squares to eliminate the noise points. Then on the basis that there is certain continuity between the holes and their surrounding surface, an approach to repair those holes is presented. The method is applied to a certain part of the tomb.