In　this　paper,　we　propose　a　new　mesh　editing　method　worked　in　the　dual　domain　for　ROI　(region　of　interest).　This　method　has　intuitive　user　interface　and　efficient　reconstruction　process.　The　mesh　detail　is　represented　by　dual　Laplacian,　and　the　reconstructed　mesh　is　obtained　by　solving　a　quadratic　minimization　problem　which　preserves　the　mesh　detail　in　least　square　sense.　Preconditioned　bi-conjugate　gradient　method　(PBCG)　is　adopted　to　iteratively　update　the　positions　of　the　dual　vertices　and　the　dual　Laplacian　coordinates:　The　experiments　demonstrate　that　our　method　can　work　effectively　and　give　visually　pleasing　results.