Provided is a plasma guide wire including a core shaft, a coil, a tip, a coil-core shaft joining region, and first to third insulating resin tubes. The first insulating resin tube is disposed on the outer periphery of the coil, and extends proximally from the tip to beyond the coil-core shaft joining region. The second insulating resin tube is disposed on the outer periphery of the core shaft, is joined to the proximal end of the first insulating resin tube, and extends from the proximal end of the first insulating resin tube to the proximal side of the core shaft. The second insulating resin tube is harder than the first insulating resin tube. The third insulating resin tube is disposed on at least a portion of a region of the inner periphery of the first insulating resin tube, proximal to a location facing the proximal end of the coil.
