Provided is a method for manufacturing a balloon catheter with which the temperature a specific portion of a cylindrical resin body can be made higher or lower than those of other portions. This method for manufacturing a balloon catheter having a shaft extending in the longitudinal direction and a resin medical balloon provided to the distal end of the shaft comprises: a step for inserting a cylindrical resin body (10) into a mold (20); and a step for disposing the mold (20) on the inner side of a heat jacket (30). The heat jacket (30) presses an inclusion (100) present on the inner side of the heat jacket (30). The pressure received by the inner surface of the heat jacket (30) from the inclusion (100) differs depending on the position of the inner surface of the heat jacket (30).
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