To elucidate the mechanism that the software Gemagic Studio and 3D printer have an important role in repairing and copying the ancient cultural relics and the damaged sculpture, we take the damaged sculpture, Sissi, as the example, repaired it based on reverse engineering, 3D scanning technology and modern 3D printing technology. In the process of research, we obtain the point data of it, using reverse engineering software Gemagic Studio for the noise removing, compaction, hole filling, surface repair, error ratio and so on. And then import the 3D printer for 3D printing. At the last, the precise entity model proved that we have a wonderful experiment.

Using reverse engineering technology software, Imageware and UG, and taking the card buckle as a prototype for the practical application of reverse engineering, this article discusses the method of combining reverse engineering with rapid technology. Using optical system to collect images, and then through the computer image processing technology to extract edge contour digital points, using the existing CAD software processing system for the reconstruction of 3D model, and taking a detail analysis of the critical technology of surface reconstruction, using rapid prototyping technology for processing molding, so as to improve the efficiency of product design, shorten the product development cycle. And at last, through the test, we get some usual problems and solve them one by one.