The utility model discloses a novel injection molding machine of structure, which comprises a frame, the frame has set gradually barrel base and fixed vehicle wall, penetrate the pedestal on the barrel base before being provided with and penetrate the pedestal after with, before penetrate the pedestal and penetrate fixed barrel and the material pipe of being provided with on the pedestal after with, the material pipe is penetrated one side of pedestal and is extended screw rod drive assembly after being close to, the hookup of screw rod drive assembly has drive arrangement, barrel and material pipe drive hookup, before penetrate the pedestal and be provided with a seat advance and retreat cylinder, seat advance and retreat cylinder is along material pipe axial extension and divide two outsides of locating the material pipe, seat advance and retreat cylinder is in same horizontal direction with the barrel. The beneficial effects of the utility model are that: seat advance and retreat cylinder is along material pipe axial extension and divide two outsides of locating the material pipe, seat advance and retreat cylinder and barrel are in same horizontal direction, and seat advance and retreat cylinder and barrel do not produce moment, and the material is managed and is penetrated the skew problem that there is not the angle in the mouth, therefore have solved effectively to leak and glued the phenomenon.