The processing of tradition small module spiral bevel gears is on the specialized gear milling machine, using small size alternate blade solid cutter, the gear and pinion are generated normally by the method of duplex, whose meshing quality on their surface was controlled in difficulty, so the improvement of the transmission property is restricted radically. A new generating combination method was proposed for small module spiral bevel gears, that the pinion was generated by traditional duplex, while the gear was generated by forming mold method. The implementation process of this method and the basic theory of application were discussed. The results show that the application of this method will be benefit to sharply improve the processing efficiency of the small module spiral bevel gears, reduce energy consumption, and be bound to acquire good economic benefits and social benefits.