The invention includes an insertable portion (7) including a housing (4), a working channel (2), a camera (6) and a wire band (5), and an endoscope body (1) having an expandable distal end. An endoscope is disclosed. The working channel (2), the camera (6) and the wire band (5) are all located inside the housing (4), the wire band (5) having one end connected to the camera (6) and the other end being the housing. Connected to the endoscope body (1) through (4), the camera (6) is provided at the end of the housing (4), and the notch (10) is provided at the end of the housing (4). The operating channel (2) or the camera (6) can be projected/retracted from the cutout (10), and when the operating channel (2) or the camera (6) is projected from the cutout (10), the operating channel ( 2) and the camera (6) are in parallel. The expandable distal end endoscope can realize expansion and contraction of the distal end of the endoscope, and can be expanded after the distal end of the endoscope has passed through a narrow human body passageway, and the working channel (2) or the camera. Since the working channel (2) and the camera (6) are juxtaposed and the working channel (2) and the camera (6) are in a parallel position, the inner diameter of the working channel (2) is remarkably increased to allow more instruments to pass therethrough and to remove larger foreign matter. It is possible to take out and have a more ideal 3D image. [Selection diagram] Figure 2本発明は、ハウジング（４）、作動チャンネル（２）、カメラ（６）および電線バンド（５）を含む挿入部（７）と、内視鏡本体（１）とを含む末端が拡大可能な内視鏡を開示する。作動チャンネル（２）、カメラ（６）および電線バンド（５）は、いずれもハウジング（４）内に位置し、電線バンド（５）は、一端がカメラ（６）に連結され、他端がハウジング（４）を通過して内視鏡本体（１）に連結され、カメラ（６）は、ハウジング（４）内の末端に設けられ、ハウジング（４）内の末端に切欠き（１０）が設けられ、作動チャンネル（２）またはカメラ（６）が切欠き（１０）から張り出し／退避可能であり、作動チャンネル（２）またはカメラ（６）が切欠き（１０）から張り出した場合、作動チャンネル（２）とカメラ（６）とは、並列状態にある。末端が拡大可能な内視鏡は、内視鏡の末端の拡大および収縮を実現することができると共に、内視鏡の末端が狭い人体通路を通過した後に拡大し、作動チャンネル（２）またはカメラ（６）が張り出し、作動チャンネル（２）とカメラ（６）とが並列の位置にあることで、作動チャンネル（２）の内径を著しく向上させ、より多くの器具を通過させ、より大きな異物を取り出し、より理想的な３Ｄ画像を備える
