The involute conical gears pair investigated in the study is composed of a conical gear and a conical pinion cut by shapers. Simulation system of gear cutting is developed by visual basic and SolidWorks API firstly. The 3D models of conical gear pairs cut by shapers can thus be obtained. Then, the contact patterns are simulated, and the effects of design parameters on the dimensions of contact pattern are studied. Otherwise, finite element analysis of conical gear pair is proceeded by commercial FEA package, ABAQUS. The results of the finite element stress analysis and contact pattern simulation can be verified mutually. The results of study show the conical gears generated by shaper cutters can solve the problem of high contact stress associated with traditional conical gears.