The utility model discloses a crosslinked polyethylene fused pipe fitting, which belongs to the technical field of crosslinked pipes, and comprises a pipe fitting body, wherein binding posts are respectively arranged on the two ends of the pipe fitting body, the binding posts are fixed by wiring terminals, two resistance wires are respectively arranged on the inner walls of the two ends of the pipe fitting body, one end of the two resistance wires are connected with each other, and the other ends of the resistance wires are connected with the binding posts which are arranged on corresponding positions. By adopting the technology, the crosslinked polyethylene fused pipe fitting is connected with a power supply through the binding posts when being welded and connected with a crosslinked pipe, the resistance wires are heated to melt plastics, the plastics can flow a little when being melted, the screw pitches of the resistance wires which are closely arranged on the inner wall of the pipe fitting body can not generate distortion, and the welding quality is guaranteed.