The invention relates to the field of pipeline plugging equipment, particularly a cable pipeline plugging apparatus. The cable pipeline plugging apparatus comprises an annular first pressing plate, an annular second pressing plate, and a rubber part arranged between the first pressing plate and the second pressing plate; the rubber part adopts an annular structure, and an opening is formed in one position thereof; each of the first pressing plate and the second pressing plate is formed by two semi-annular structures separately; and the first pressing plate, the second pressing plate and the rubber part are fixedly connected through threaded rods and nuts. According to the cable pipeline plugging apparatus obtained in the invention, by virtue of compression of the first pressing plate and the second pressing plate, the outer side wall of the rubber part can be extruded to be convex outwards; and meanwhile, by virtue of the design of the inclined inner wall of the second pressing plate, the inner side wall of the rubber part can be compressed inwardly, so as to generate relatively high pressure between the inner side wall of the rubber part and the cable, so that better sealing performance is achieved.