Spur face gear is a plane gear and spur gear meshing.Because of this unique engagement mode,not only spur face gear is used to transfer motion and power with intersecting axes,but also it has advantages such as high contact ratio,smooth transmission,low noise,good transmission torque split compared to the traditional gear (such as cylindrical gear,cone gear).These advantages make spur face gear is widely used in transmission fields of low speed and high speed,heavy and light load.The rapid fabrication technology of spur face gears was studied.The model shrinkage problem was discussed.