This PE plugging head adopts a two-way structure, with a pressure plate at the front and back of the leather bowl to fix it on the half disc of the sealing device transmission shaft. When the occluder is in the open state, the two cups are opened, and the middle seam rubber plate is tightly attached, forming a complete circle. The lip of the cup is tightly attached to the inner wall of the pipeline and has a certain compressibility, making the occlusion tight and reliable.