Currently,for the processing of single and limited quantities spiral bevel gear,special gear machine or CNC spiral bevel gear milling machine are needed which have the drawback of limited processing objects,limited processing range,high single production cost.For some special parameter incomplete gears or some spiral bevel gears which are used in some certain occasions,they cannot be processed by using special machine.To overcome these problems,a way to complete the spiral bevel gears processing on 5axis NC machine tools was present.The problems were pointed out and solutions were put forward.The digital modeling of spiral bevel gear in UG environment was realized.Tool path of spiral bevel gear and post processing NC code were generated by using PowerMill software.Simulation and validation in VERICUT environment were conducted and parts manufacturing on 5axis NC machine tool DMG_DMU50V was finished.After testing by bevel gears checking machine,it is shown that processing spiral bevel gear on 5axis NC machine tools meets the designing requirement,which means it is suited to produce single product and limited quantities.