The utility model discloses a single circle impulse welding wiring circle with magnetism collection ware function for produce the high -intensity magnetic field, and wherein carrying out quick pulse welding. The shape of an outside approximate rectangle opening copper billet of single circle impulse solenoid, wherein the gap of opening part is insulating, carries out the hole of digging of circular cone style to the side of the copper billet symmetry, the gradient is 45 degrees. The aperture that dig out a cylinder type is put at central point. In through the electric current, the dense coil of this kong chengdan, inside formation electric field, it is especially the biggest at the inside electric field strength of cylinder type aperture, and the magnetic field of the electric current production of circular cone molded lines face on every side is favorable to the realization of pulse welding constantly to cylindrical center magnetic field enhancement more. A reaction force for fixing the insulating thing of single circle impulse solenoid adopts insulating screw, and the specification preferences is suitable, can bear the lorentz lorentz's power that produces when the pulse is welded to and there is certain withstand voltage intensity.