Feature recognition is the key technology in establishing auto body panel CAPP system. Hole features and draw boss features has been classified according to their forming and function properties in this paper. Recognition algorithms have been developed for hole feature and drawing boss feature, which can also distinguish two dimensional hole and three dimensional hole, and differentiate circle hole and non circle hole automatically. The algorithms can also recognize the drawing bosses and judge whether the boss has holes. Furthermore, the algorithms can give out the parameters of hole and drawing boss recognized, such as radius of circle hole, minimum radius of curvature of shaped hole’ boundaries, the parameters of hole in the drawing boss, the edges’ ID of the hole and the surfaces’ ID of the boss.