A flexible tube portion of an insertion portion of an electronic endoscope and a universal cable each includes a laminated tube member and a corrugated tube connection member. The laminated tube member includes a conductive tube member and an insulating cover that covers the conductive tube member. The corrugated tube connection member includes a fixing hole in which an end portion of the laminated tube member is inserted. The end portion of the laminated tube member inserted in the fixing hole is adhesively fixed. The end portion of the laminated tube member installed in the fixing hole is an electrical connection portion, and the conductive tube member is exposed by peeling the insulating cover. The corrugated tube connection member includes a conductive elastic member in the fixing hole. The conductive elastic member electrically connects the electrical connection portion to the corrugated tube connection member. The conductive elastic member is elastically deformable radially and has an urging force for contacting an outer surface of the conductive tube member with a predetermined pressing force.
