本文根据某铁路焊接钢桥整体焊接节点要求有高的低温韧性和不过高的强度和屈服强度而设计制造了一种微量Ｂ、Ｔｉ、Ｒｅ高韧性焊丝取得了预期的效果，从成分设计及调整、制成焊丝和进行熔敷金属及焊接接头试验，获得了有意义的结果，证明了电渣熔炼和加入微量Ｂ、Ｔｉ、Ｒｅ是研制高韧性焊丝的重要途径。 In this paper, we design and manufacture a kind of micro-B, Ti, Re high-toughness wire according to the requirement of high temperature toughness and high strength and yield strength required by the welded joints of a welded steel bridge in a railway. From the aspects of composition design and adjustment , Made of welding wire and welding metal and welded joints test obtained meaningful results, and proved that the addition of trace electroslag melting B, Ti, Re is an important way to develop high toughness wire.