Abstract: Geometric features contained in an original CAD model might prevent the generation of a high-quality surface mesh on the model.An automatic approach is proposed to remove the features defined on the composite parametric surface model, followed with an enhanced surface mesh generation scheme for the defeatured surfaces.An extended B-rep that combines the concepts of discretized models and virtual topologies is employed to provide fundamental geometric services for the proposed approach.Four kinds of surface features, i.e.short edges, tiny surfaces, proximities and unsmoothed surface boundaries, are recognized, among which short edges are suppressed by edge clustering, and the other features are suppressed by surface clustering.Virtual surfaces formed by surface clustering have no continuous parametric forms and have to be meshed on their discretized models.Subsequently, the interior mesh nodes on virtual faces are mapped back to the continuous surface to achieve a higher geometric fidelity.Some numerical experiments are finally presented to demonstrate the effectiveness and validity of the proposed approach.