The automatic soap cutting machine/top and bottom screw and two-layer orifice plate of the soap vacuum extruding machine extrude and refine the soap base, so that the structure of the soap strip is compact and the surface is smooth. Low spiral electromagnetic speed control, flexible control of production capacity. The vacuum pump takes away the air in the soap, and the soap body is not easy to crack. The vacuum chamber is designed with a viewable window, and the vacuum gauge can be used to test the negative pressure. The automatic heater temperature control system is adopted. The upper and lower spiral cylinders are designed as interlayer for cooling water in and out. The transmission motor is separated from the reducer, with convenient maintenance and long service life.