A new gear called sextuplearc gear was designed, which tooth profile has six work arcs, and three convex arcs were located above on pitch line, three concave arcs were located under pitch line. Every two work arcs were connected by transition arc. Sextuplearc gear had six meshing points on a single tooth, loads were dispersed in the six meshing points. Compare with the doublearc gear, sextuplearc gear had more carrying capacity. Finite element models of doublearc gear and sextuplearc gear were also established. The results of finite element method confirm that sextuplearc gear tooth contact stress is 20% lower than that of the doublearc gear.