[Problem] There is provided a balloon catheter in which kink resistance and a deflation time performance can be compatible. [Solution] There are provided a proximal shaft 120, a distal shaft 140, an intermediate shaft 130 that is positioned between the proximal shaft and the distal shaft, lumens 122, 132, and 142 that penetrate through the proximal shaft, the intermediate shaft, and the distal shaft and introduce and discharge a dilation fluid for a balloon, an inner tube shaft 160 that has a guide wire opening 164 which is arranged at a boundary between the intermediate shaft and the distal shaft and through which the lumen extends, and a reinforcement member 170 that is arranged in the lumen so as to suppress an occurrence of a kink. The reinforcement member 170 has a tapered proximal portion 172 which is fixed to the proximal shaft and arranged inside the lumen positioned in the intermediate shaft, a tapered distal portion 178 which is arranged inside the lumen positioned in the distal shaft, and a straight transition portion 176 which is positioned between the proximal portion 172 and the distal portion 178. The transition portion 176 is aligned with the guide wire opening 164.
