Welding device of transformer leads

The utility model relates to a welding device of transformer leads and belongs to the technical field of transformer lead connecting devices. The welding device of the transformer leads comprises a cold pressing copper pipe body (1) and holes (2), wherein the number of the holes (2) is two and the holes (2) are symmetrically formed in the middle portion of the cold pressing copper pipe body (1). The welding device of the transformer leads has the advantages that leader cables and coil heads (round copper wires, flat copper wires and the like) of a transformer are connected with cold-pressed terminals of various types in an indentation mode so that various shortages that partial discharging which exceeds standard is caused by the adoption of traditional phosphor copper welding in the transformer leads and the like are avoided, and the inner structure of the transformer is beautiful in terms of appearance.