This machine adopts tooth shape transmission step feeding, with accurate transmission step, the meat-feed is supported by three group of dismountable lattice bar, the injection needle is controlled by gas spring, it can reach the injection with bone. Ilnjection pressure, injection rate, the distance and speed for transmission step can be adjusted freely according to the material size and the organizational structure, it can reach the desired effect. Moreover, in order to solve the blocking of the needle，this machine adopts two-stage filtration,and with dredge device for the needle by wind power, easy to handle, convenient to maintenance, it is an ideal equipment for meat processing.