GUIDE WIRE

[Problem to be Solved]To provide a guidewire capable of ensuring flexibility of a distal portion of a guidewire and preventing a coating agent from peeling from a core shaft.[Solution to Problem]A guidewire 1 comprises a core shaft 3, a coil body 5 which a distal end of the coil body 5 is joined to the core shaft 3 at a position spaced proximally from a distal end of the core shaft 3, and a coating agent 7 covering an outer periphery of the core shaft 3 and the coil body 5, wherein the core shaft 3 includes a bulge portion 9 joined at a position spaced distally from the distal end of the coil body 5, the coating agent 7 covers the core shaft 3 and the coil body 5 from a distal side of the bulge portion 9 to a proximal side of a proximal end of the coil body 5 except for an interior of the coil body 5.