If the gear shift steering gear is not high in the meshing of straight tooth cylindrical gears and straight tooth strips, the stability of the operation is reduced, the impact force is large, and the work noise increases. In addition, the angle between the gear axis and the rack axis can only be a right angle. To this end, it was eliminated because it was not adapted to the overall layout. Using the gear rack -ranging steward meshing of oblique cylindrical gears and oblique tooth strips, the weight coincidence increases, operates smoothly, and the impact and noise are reduced, and the angle between the gear axis and the rack axis is easy to meet the overall design requirements of the overall design requirements Essence Because the oblique teeth have axial force when working, the steering device should use the thrust bearing. The sliding grinding of the oblique gear is a disadvantage.