Low-voltage house-service wire through-wall protection device

The utility model provides a low-voltage house-service wire through-wall protection device, which relates to the technical field of power construction, and comprises a first protection shell, a second protection shell is arranged on the side surface of the first protection shell, the second protection shell is movably connected with the first protection shell, and a movable block and a butt joint block are respectively arranged in the first protection shell and the second protection shell. Balls are evenly arranged on the inner sides of the movable block and the butt joint block, the balls are movably connected with the movable block and the butt joint block respectively, after the first protection shell and the second protection shell are installed and combined, the house-service wire is placed into the device along one end of the device, at the moment, under the action of the balls, the house-service wire can rapidly move in the device, and therefore rapid wiring is achieved. And the working efficiency is i