The invention relates to the technical field of PET (polyethylene terephthalate) thin film sales, and discloses a PET thin film showing sales shelf with a sorting function. The PET thin film showing sales shelf comprises two vertical plates, wherein at least three transverse plates are fixedly mounted between the two vertical plates; positions, located above the left ends of the transverse plates, on the vertical plate on one side are fixedly connected with driving motors I; shaft couplers are fixedly mounted at output shafts of the driving motors I; rotating shafts are fixedly mounted on the right sides of the shaft couplers; one end, far away from each driving motor I, of each rotating shaft is movably connected with the left side of the vertical plate on the right side. According to the PET thin film showing sales shelf with the sorting function, due to the arrangement of winding devices, driving motors II for driving the winding devices are started to drive rotary drums to rotate, and winding springs are tightened to enable clamping blocks to move upwards to expose gaps, and then one end of a PET thin film is put into each gap; the tightened springs are loosened to enable the clamping blocks to move downwards to clamp one end of the PET thin film in the gap; therefore, the PET thin film can be wound, a neat and attractive surface of the sales shelf can be maintained favorably, and sales promotion is realized.