This paper proposes a digital method based on computer technology for restoration of broken bronze artifacts having a symmetrical structure. First, a threedimensional laser scanner is used to construct an artifact model based on currently available information. Second, the symmetryplane of the broken artifact is computed using the least squares method for finding feature points, which are selected manually. Finally, the restoration result is obtained based on the symmetrical structure of the artifact. In order to solve the problem that exists due to the difference in shape between the reflection model based on a symmetrical plane and original incomplete model, a non-rigid registration method is used to warp the reflection model in order to make the final restoration model appropriate. The feasibility and usability of the algorithm is confirmed by experiments. This restoration method can be of use to artifact conservation experts.