The PTFE pall ring is a new kind of packing, which is the improvement of some major defects of the Raschig ring. It is an eight-layer partition window on the wall of the ordinary Raschig ring. The small window blades are placed at the center of the ring. The main difference between it and the Raschig ring packing is that there are pane holes on the array, and the window leaves of the window holes are bent into the center of the ring. The distribution performance of the liquid is overcome compared with the Raschig ring due to the gas required for the opening of the ring wall. Improvements, especially within the ring, can be successfully utilized.