[Problem] Provided is a guide wire which is excellent in the flexibility of a distal portion thereof, the followability for a blood vessel and the like and the transmutability of delicate informations such as resistance produced when the distal portion makes contact with a wall surface of a blood vessel and the like to slide, resistance produced when the distal portion bumps against a stenosed section and the like.[Solution] A guide wire comprising a core shaft and a coil body 1 covering a distal portion of the core shaft, the coil body 1 being formed by helically winding a stranded wire having two or more elemental wires interwound together, and the stranded wire being hollow and having a first void at the center thereof.
