The door and window profile production line uses PVC powder to manufacture various plastic door and window profiles and decorative profiles. With reference to the latest foreign technology, the unit is optimized for design, with the advantages of uniform plasticization, high output and long service life. The unit consists of a cone-type twin-screw extruder, a vacuum setting table, a tractor, a cutting machine and a laminating machine. The composition of the turning frame, the main machine adopts imported DC/AC variable frequency drag, the cutting machine adopts imported PLC control, the temperature control instrument adopts the Japanese RKC company product, the auxiliary machine vacuum pump and the traction motor adopt high quality products, and the maintenance is simple.