PROBLEM TO BE SOLVED: To provide a medical guide wire which has a flexible and sturdy tip end.SOLUTION: A medical guide wire 1B comprises: a core shaft 2: an outside coil 31 for covering at least the tip end of the core shaft 2; and an inside coil 10 positioned inside the outside coil 31 and covering at least the tip end of the core shaft 2. A space between the outside coil 31 and the inside coil 10 is filled with a resin material to form a resin layer 20, a portion of the outside coil 31 corresponding to the resin layer 20 being coiled coarsely.