Lounsbery has brought out a multi-resolution analysis scheme for triangle meshes,but it can only be applied to the regular triangle meshes,and covers a remeshing of the existing 3D data.In order to solve the problem,we extend Lounsbery’s scheme by using the wavelets.In the algorithm,the irregular meshes can be directly compressed,and then multi-resolution meshes can be obtained.Based on the geometry of the processed meshes,the triangle meshes have been optimized,and the output became more similar.The results indicate that the proposed algorithm has a good speed,efficiency and practical values.