The utility model provides a pipe beam type current lead wire, which comprises a copper core body, a conversion welding seat, a fin layer, a lug boss layer, a sleeve pipe and a conversion joint, wherein the lower part of the conversion welding seat is sheathed on the copper core body, in addition, the conversion welding seat and the copper core body are mutually welded, the copper core body is coaxially arranged inside the sleeve pipe, in addition, a first gap is formed between the copper core body and the sleeve pipe, the fin layer and the lug boss layer are welded on the outer circumference of the copper core body, external screw threads are respectively arranged at the upper part and the lower part of the conversion welding seat, the external screw threads of the upper part are engaged and assembled with the internal screw threads of the conversion joint, and the external screw threads of the lower part are engaged and assembled with the internal screw threads of the sleeve pipe. The pipe beam type current lead wire has the advantages that the forced current cooling heat exchange effect is enhanced, the heat leakage quantity from the room temperature end to the low temperature end is weakened, the power load flexible applicability is enhanced, the structure is simple, the mounting and the dismounting are convenient, and economy and practicability are realized.