PROBLEM TO BE SOLVED: To provide a guide wire which secures a bonding strength between a core shaft and a coil body when various materials of the core shaft and the coil body are changed, particularly when the core shaft and the coil body are formed of tungsten. .. SOLUTION: A core shaft 3, a coil body 5 covering the outer periphery of the core shaft 3, and a tip joint portion 13, an intermediate joint portion 15, and a base end joint portion 17 for joining the core shaft 3 and the coil body 5 are formed. In the provided guide wire 1, the tip joint portion 13, the intermediate joint portion 15, and the base end joint portion 17 are made of tin-zinc solder. [Selection diagram] Fig. 1【課題】コアシャフト及びコイル体の材料が種々変化した場合、特に、コアシャフト及びコイル体がタングステンで形成された場合においても、コアシャフトとコイル体との接合強度を確保したガイドワイヤを提供する。【解決手段】コアシャフト３と、そのコアシャフト３の外周を覆うコイル体５と、コアシャフト３とコイル体５とを接合する先端接合部１３、中間接合部１５及び基端接合部１７とを備えたガイドワイヤ１において、先端接合部１３、中間接合部１５及び基端接合部１７は、錫－亜鉛系はんだからなる。【選択図】図１
