The method of nonfeature modeling has become the important studies of research in reverse engineering. The widely used methods of reverse nonfeature modeling which were based on detect contour and curvature were summarized and analyzed, and a nonfeature modeling method was proposed based on division of boundary, and the general process and the benefits of this nonfeature modeling approach were detailed. With the reverse modeling software Geomagic Studio as platform, the advantage of the reverse nonfeature modeling method is verified through modeling and error analysis of a model with complex feature, which provides a new method for the nonfeature modeling in reverse engineering.