Abstract: By the combination of spline and meshes together,this paper studies the spline-based editing on triangular meshes.First,a spline surface is expanded near the mesh surface,and the local coordinates of each mesh vertex are computed in the Frenet frame of its peer spline sample.After the deformation of spline surface,Frenet frame at spline samples is computed,then the deformed location of mesh vertices are reconstructed using local coordinates.In comparison with traditional spline modeling methods,mesh based spline editing tools can preserve details and possess fewer control points；it makes the modeling much easier.