The invention discloses a PVC film coil stock processing system. The PVC film coil stock processing system comprises a heating mechanism, a pressing roller mechanism, a humidifying mechanism, a cooling mechanism and a material coiling mechanism used for coiling a cooled PVC film; the material coiling mechanism comprises a rack, a material receiving roller, a material transferring roller and a balance roller; the balance roller comprises a supporting shaft and a roller movably arranged on the supporting shaft in a sleeving manner; the supporting shaft is connected to the rack in an up-down floating manner; the two ends of the material receiving roller are each provided with a connection shaft; and the rack is provided with slide grooves in cooperation with the connection shafts and a position adjusting device used for positioning the positions of the connection shafts. In the PVC film coil stock processing system, due to the fact that the position of the material receiving roller relative to the rack is adjustable, when a thick PVC film needed to be coiled, it is needed to control the material receiving roller to do certain movement in the direction of a raw material feeding roller,then it can be guaranteed that a film coil cannot be near to the feeding roller, and it is guaranteed that a good coiling effect is achieved.