This endoscope is provided with: multiple built-in endoscope components which are inserted through an endoscope insertion unit that extends from an endoscope operation unit a stepped built-in endoscope component, which is at least one of the multiple built-in endoscope components, and in which the outer diameter of the tip-side portion and the outer diameter of the base-side portion are different, the outer diameter of the base-side portion being greater than the outer diameter of the tip-side portion a tip-side insertion unit which is provided with a tip and a base, comprises a curving section between the base and the tip, configures the tip side of the endoscope insertion unit and the tip body, and has a positioning hole of a pre-determined inner diameter into which the tip-side portions of the multiple built-in endoscope components and the stepped built-in endoscope component are inserted a base-side insertion unit which configures the base side of the endoscope insertion unit, has one end connected to the base of the tip-side insertion unit and the other end linked to the endoscope operation unit, and has a through-hole, of a diameter larger than the inner diameter of the positioning hole, for guiding the large-diameter base-side portion of the multiple built-in endoscope components and the stepped built-in endoscope component into the endoscope operation unit.Linvention concerne un endoscope qui comprend : de multiples composants dendoscope intégrés qui sont introduits à travers une unité dintroduction dendoscope qui sétend à partir dune unité dactionnement dendoscope un composant dendoscope intégré à gradins, qui est au moins lun des multiples composants dendoscope intégrés, et dans lequel le diamètre extérieur de la partie côté pointe et le diamètre extérieur de la partie côté base sont différents, le diamètre extérieur de la partie côté base étant plus grand que le diamètre extérieur de la partie côté pointe une unité dintroduction côté pointe qui comprend
