The utility model discloses a wedge -type seal piece relates to suspension bridge cable protection technical field, including the wedge that the high one end of one end the is low body of making by rubber, the wedge body is equipped with a plurality of location pinholes, and is a plurality of the orientation of location pinhole with the orientation of the wedge face of the wedge body is perpendicular setting, at least, be equipped with on the wedge face of the wedge body two with the cable hoop groove that the location pinhole orientation is the same, the wedge body is equipped with a plurality of sealed archs of stretching out its bottom surface. Compared with the prior art, the utility model discloses wedge -type seal piece installs cord clip tip on the main push -towing rope, and the both sides of its wedge body are through the locating pin butt joint of dress in the location pinhole, and the wedge annulus is around on the main push -towing rope, and high -end and the cord clip of the wedge body bond, sets up the wedge body on the main push -towing rope with the cable hoop, and the wedge body produces and warp its and high -endly compress tightly with the cord clip, and the sealed arch and the main push -towing rope of bottom surface compress tightly, and it is sealed to ask for the clamp ring seam, and installation easy operation is convenient, and this wedge -type seal piece is difficult to age long service life.