The point cloud data of the metal plate parts were obtained by using the articulated arm scanner system. The point cloud data were imported into the reverse software. Through point cloud processing, polygon processing and parameterization design, NURBS surface of the parts was constructed. Finally, the surface model was modified in forward software to get an ideal surface, with relatively higher quality and more fitting its features and original design ideas. By experiments, it is verified that the design requirement of date revert to original parts can be met by using the parameterization technology, so as to improve design efficiency. 