The present invention discloses an auxiliary device for an endoscopy. The auxiliary device for an endoscopy includes a pipe and a clamping unit. The clamping unit has a tube and a connector. The connector is connected to the pipe. The tube is configured to clamp a capsule endoscopy. The tube defines a inner space configured to accommodate a part of the capsule endoscopy. The tube includes an first opening section, a second opening section and a third opening section. The first opening section extends toward a second end of the tube from a first end of the tube for a first distance. The second opening section extends toward the second end of the tube from a first end of the tube for a second distance. The third opening section extends toward the second end of the tube from a first end of the tube for a third distance. The first opening section, the second opening section and the third opening section are separated from each other, and the first distance is greater than the second distance and the third distance.本發明揭露一種內視鏡輔助裝置，包含導管以及夾持單元。夾持單元具有套管與連接部，連接部與導管連接，套管用以夾持膠囊型內視鏡，套管定義有內部空間，內部空間用以容納部分的膠囊型內視鏡。套管包含第一開口部、第二開口部及第三開口部。第一開口部自套管的第一端，朝向套管的第二端延伸第一距離。第二開口部自套管的第一端起始，朝向套管的第二端延伸第二距離。第三開口部自套管的第一端起始，朝向套管的第二端延伸第三距離。第一開口部、第二開口部及第三開口部彼此分離，且第一距離大於第二距離及第三距離。
