The medical application guide wire whose insertion characteristic and contrast characteristic are satisfactory is offered. The coil section and the cap section which are provided in the medical application guide wire itself section and the aforementioned point which have the point whose wire diameter is thinner than the body section and its body section and, being the medical application guide wire which is possessed, the wire which is used for the aforementioned coil section, makes the clad wire which consists of the coating section which designates the titanium which covers the core material section and the core material section which designate at least the kind of the tungsten or the molybdenum as the main component as the main component.挿入性および造影性が良好な医療用ガイドワイヤを提供する。胴体部およびその胴体部よりも線径の細い先端部を備えた医療用ガイドワイヤ本体部と、前記先端部に設けられたコイル部およびキャップ部と、を具備する医療用ガイドワイヤであって、前記コイル部に使用されるワイヤが、タングステンまたはモリブデンの少なくとも一種を主成分とする芯材部と、その芯材部を被覆するチタンを主成分とする被覆部とからなるクラッドワイヤとする。
