[Problem to be solved] An object of the present invention is to provide a balloon catheter (10) in which a valley portion (90, 100) having a short distance to an inner tube (50) can be preferentially depressurized for quick folding when a balloon (20) is allowed to transform from an expanded state to a folded state, while a valley portion having a long distance to the inner tube is preferentially pressurized for quick expansion when the balloon is allowed to transform from a folded state to an expanded state. [Solution] The distance between at least one valley portion (100) of the 6 valley portions (90, 100) and the inner tube (50) is shorter than distances between other 5 valley portions (90) and the inner tube (50) when the balloon (20) of the balloon catheter (10) is folded around the outer periphery of the inner tube (50).
