Electric heating tube

The utility model belongs to the technical field of electric heating tubes, and discloses an electric heating tube which comprises a base body and an electric heating layer, the base body is cylindrical and hollow, the electric heating layer is attached to the outer side wall or the inner side wall of the base body, and the electric heating layer is connected with an electrode. Firstly, through the cylindrical arrangement, the base body is stressed more uniformly and more firmly and is not easy to break, meanwhile, the electric heating layer is attached to the surface or the inner wall of the base body and can be suitable for more working environments, and the electrodes are arranged on the electric heating layer, so that the electric heating tube is stable in performance, uniform in heating and low in cost; and secondly, the base body can be made of insulating materials, the manufacturing cost and the failure rate are reduced, machining and manufacturing are easier, a heat insulation layer is arranged on the