The utility model relates to an equipment accessory, concretely relates to waterproof cold -proof wall bushing, last sleeve pipe and case including threaded connection, go up sleeve pipe one end and expose outside the wall, be equipped with the screw thread on the other end pipe shaft, the case sets up in the wall, upward be equipped with the flexible waterproof cover of round on the sleeve pipe pipe shaft, be equipped with the sucking disc on the medial surface between waterproof cover and the last sleeve pipe, waterproof cover is towards the direction slope of screw thread, it is equipped with a plurality of rings of flange rings to go up the sheathed tube medial surface, go up the intraductal foam blanket that is equipped with of cover, the one end of case is equipped with the thread groove that matches with last casing thread. The utility model provides a waterproof cold -proof wall bushing, simple structure is reliable, prevents the fine motion of cable and slide to lead to the not tight problem of wall bushing laminating, improves thermal -insulated ability, has very high market benefits of the popularization.