The utility model relates to an end sealer for a cable poling, belonging to the field of the power transmission and distribution technology. The end sealer for a cable poling is formed by an outer clamping plate, an inner clamping plate and a seal ring which is clamped by bolts, wherein the seal ring is extruded radially when the seal ring is clamped in axial direction, thus eliminating the gaps between the seal ring and a cable, a cable poling, clamp bolts, a deflating valve and a suction nozzle so as to balance the pressure in the cable poling and the outside, sealing the cable poling so as to make the cable poling be waterproof, protecting the cable insulation environment, and being used for sealing the power cable poling.