Abstract: The mesh generated by reverse engineering or simple tessellations of solid models usually cannot be directly applied to analysis due to bad quality.An iterative optimization algorithm is proposed.Mesh is first refined to get enough degree of freedom for changing topology and geometry.Then within a given tolerance the mesh quality is improved by simplification and regularization.This progress is iterated until the mesh quality meets the requirement or a given maximum number of iterations are reached.The experimental results are given to demonstrate the flexibility and effectiveness of the proposed algorithm.