The present invention provides an endoscope (10) which can easily fix a balloon (60) and keep airtightness after the fixation, and can raise a degree of freedom of a mounting location of the balloon (60). An endoscope (10) includes an insertion unit (12), and a pipeline (66) which is provided inside the insertion unit (12), and supplies a fluid to a balloon (60) which is mounted on the insertion unit (12). The pipeline (66) is made to have a plurality of openings (64), (65) in an axial direction of the insertion unit (12) on an outer peripheral surface of the insertion unit (12).
