The invention discloses a waxing rolling device of a car, which comprises a rubber body, a handle, a rocker, a screw shaft, a screw, a deerskin sleeve, a cover and a screw thread plug, etc. A space for arranging the wax is arranged in the rubber body; one surface of the rubber body is provided with a waxing surface and the other surface is a designed to be a rolling surface. The invention is suitable for being used for maintaining and waxing various cars, planes and military appliances, etc. and can uniformly coat and roll the wax on the corners of gaps in full orientation.