Problem to be solved: to provide a wire bonding method and a wire joint capable of joining the wire to a high strength without limiting the diameter of the wire, the twisting of the wire, and the number of wires.A method of manufacturing a wire junction is a method in which a plurality of wires are welded by pressurizing and welding an end surface of a plurality of electrically conductive wires, and a plurality of wires are welded to cover a portion adjacent to a weld part and a weld portion of a plurality of wires by a cylindrical member and plastic deformation of the cylindrical member Thus, at least a portion of the inner diameter of the cylindrical member covering the area adjacent to the welded portion is made smaller than the outer diameter of the welded portion.Diagram【課題】ワイヤの径、ワイヤの撚り方、ワイヤの本数に限らず、ワイヤ同士を高強度に接合することができるワイヤ接合体の製造方法およびワイヤ接合体を提供すること。【解決手段】ワイヤ接合体の製造方法は、導電性の複数のワイヤの端面同士を突き合わせて加圧および通電することにより、複数のワイヤを溶接し、複数のワイヤの溶接部および溶接部に隣接する領域を円筒部材によって覆い、円筒部材を塑性変形させることにより、溶接部に隣接する領域を覆う円筒部材の内径の少なくとも一部を、溶接部の外径よりも小さくする。【選択図】図１
