The utility model relates to the field of single-screw compressors, in particular to a device for manufacturing screws and star-wheel engaging pairs tooth side molded lines of single-screw compressors. The device is manufactured by the current international advanced technology with a calibration precision higher than the fifth grade of the state standard and the rotating speed of a workbench is much higher than that of a numerical control closed loop screw and star-wheel special machine. The rotating speed of the numerical control closed loop screw and star-wheel special machine is at least six times that of a ring-face worm accessory special machine.Screws manufactured by a machine tool are mounted betwwen the upper left (right) head and the right (left) tailstock of the machine tool.Six helical groove screws rotates toward the position-fixed workbench which is in a anticlockwise (clockwise) rotation from up to down (from down to up) during operation. According to the utility model, the production efficiency is improved by more than 12 times. Meanwhile, screws and star-wheel engaging pairs tooth sides of high accuracy, high surface quality and no theoretical errors can be produced with high efficiency. The obtained single-screw compressor has the advantages of long service life, reliability, low carbon and mute, which is energy-saving and environmentally friendly.