In the cone worm gearing, the curved surface of the taper worm gear is more complex, and it is difficult to model it directly in three-dimensional software. In this chapter, the AutoLISP language and the three-dimensional modeling software SolidWorks are used to jointly simulate and analyze the three-dimensional modeling of the cone worm pair, and the program written by AutoLISP is used to simulate the generating cutting process of the cone worm gear; then, the tooth surface of the cone worm gear is reconstructed by SolidWorks, and the tooth profile curve is fitted by the B-spline method, and the three-dimensional shape of the cone worm gear with accurate and smooth tooth surface is obtained. The resulting three-dimensional model of the cone worm transmission pair can be used for meshing simulation, finite element simulation analysis, and research on parts processing methods, which provides a method for the digital manufacturing of complex curved parts.