An injection molding machine with a blanking device: the utility model discloses an injection molding machine with a blanking device, which comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with two fixed seats, and the top of the fixed seat is fixedly connected with an extruder. Out of the barrel, an extrusion screw is movably connected to the inner wall of one side of the extrusion barrel, a bracket is fixedly connected to the upper surface of the bottom plate, a first motor is fixedly connected to the upper surface of the bracket, and one end of the extrusion screw is connected to the first motor. One end of the output shaft is fixed, and a mounting frame is fixedly connected to the upper surface of the bottom plate. The utility model not only enables the stirring rod to fully stir the injection molding raw materials, prevents the injection molding raw materials from being coarse in texture, and improves the quality of the products produced by the mold, but also can automatically extrude the raw materials from the extrusion barrel through the rotation of the extrusion screw, thereby improving the injection molding efficiency. It is also possible to enable the staff to observe the stirring situation of the injection molding raw materials in the mixing tank at any time through the window, so that the raw materials can be put into the mixing tank in time, and the mixing efficiency of the injection molding materials can be improved.