An endoscope (10) includes a plate member (50) to which a member (43) be operated to bend a bendable portion (23) is fixed and which includes a through hole (55), and a tubular unit (100) formed in a tubular shape to make a fluid flow and including a coupling portion (105) which functions as a protruding portion disposed so as to be protruded from an outer surface. The endoscope (10) further includes a positioning mechanism (200) which positions the plate member (50) and the tubular unit (100) relative to each other so as to dispose the protruding portion around a periphery of the through hole (50) including the through hole (50).
