Heating cable and manufacturing method thereof

The invention relates to the technical field of cables, in particular to a heating cable and a manufacturing method thereof.The heating cable comprises a metal outer sheath, the metal outer sheath is filled with insulating filler, a plurality of tubular conductors are embedded in the insulating filler and evenly distributed in the circumferential direction, and a metal inner sleeve is arranged in the middle of the insulating filler; a plurality of temperature measuring optical fibers are arranged in the metal inner sleeve; a valve body is arranged at a port of the tubular conductor, the valve body is used for being connected with a pump body, and the control terminal is electrically connected with the temperature measuring optical fiber. Aiming at the technical problem that a traditional heating cable has defects, the temperature distribution condition of all points along the cable can be measured, and a tubular conductor is adopted, so that an electric field is uniformly distributed, the skin effect is reduc