The invention discloses an efficient PVC film machining system which comprises a feeding device, a heating device, a humidification device and a cooling device used for cooling heated PVC films. The cooling device comprises a supporting mechanism, a cooling mechanism and a driving mechanism used for driving the cooling mechanism to rotate; the cooling mechanism comprises a cooling component and aliquid adding part used for leading cooling liquid into the cooling component, and the cooling component is matched with the liquid adding part. The efficient PVC film machining system is provided with the feeding device, to-be-machined PVC films can be automatically fed into a machining process, and the feeding efficiency is improved; by means of the heating device, the PVC films can be preventedfrom wrinkling in the machining process; by means of the humidification device, humidity of the PVC films can be improved, and bending deformation of the PVC films is avoided; and the cooling deviceis arranged, the PVC films can be cooled, the surface smoothness of the PVC films is guaranteed, and the polyvinyl chloride quality is improved.