When using traditional subtractive machining method, the tool can not reach somewhere for some complex parts such as engine impellers, blisks. The machining process would be hard. Additive-subtractive hybrid machining method can be used to machine before obstacles formed, which is an effective way to machine complex parts. Therefore, a hybrid manufacturing process planning algorithm should be researched. In order to validate the feasibility of the algorithm,an additive-subtractive-integrated hybrid manufacturing validation platform based on 5+1 axes is built in this paper. A small engraving machine is used as the base of the platform. X, Y, Z are three translational axes and B, C in the cradle platform are rotation axes, which construct the five-axis system. An additional axis controls feeding of 3D printing extruder. A mechanical device is designed, in which a guide mechanism is used to integrate 3D printing extruder and spindle of the engraving machine. Mach3 six-axis CNC system is used to control the movement of each axis. By this way, an additive-subtractiveintegrated hybrid manufacturing process can be realized.