ular motion, and are driven by the motor power, which can drive gear(orbelt) pass to spindle flat membrane and then makes the pressure roller rotate in the function of friction. The high friction temperature between pressure roller and flat membrane can make power material gelatinize under high temperature. Protein coagulates and changes its figure and comes out from membrane hole under extrusion effect. The needed length of pellet can be gained by adjusting cutting knife. Pellet,after dischargi