Provided in the present invention are a multi-segment bending tube apparatus for an endoscope, and an endoscope, the apparatus comprising: sequentially connected, a controllable bending segment, a passive bending segment, and a rigid segment, one end of the controllable bending segment being directly or indirectly connected to an endoscopic assembly. The passive bending segment comprises a first spiral tube section, a second spiral tube section, and a third spiral tube section, the first spiral tube section and the third spiral tube section being spiral tubes provided with a spiral-shaped first gap in a tube wall thereof, and the second spiral tube section being a spiral tube provided with a spiral-shaped second gap in a tube wall thereof. A protruding gap part is provided on the second gap, so that a fastening slot and a fastening part for inserting into the fastening slot are formed on tube wall sections on either side of the protruding gap part. In the present invention, by means of the formation of the fastening part and the fastening slot, radial expansion or contraction of each section of the second spiral tube when twisted can be prevented or reduced, thereby avoiding reduction of the rotational coaxiality between each portion of the second spiral tube, allowing rotation to be transmitted effectively.La présente invention concerne un appareil de tube de flexion à segments multiples pour un endoscope, et un endoscope, l'appareil comprenant : connectés de manière séquentielle, un segment de flexion pouvant être commandé, un segment de flexion passif, et un segment rigide, une extrémité du segment de flexion pouvant être commandé étant directement ou indirectement reliée à un ensemble endoscopique. Le segment de flexion passif comprend une première section de tube en spirale, une deuxième section de tube en spirale et une troisième section de tube en spirale, la première section de tube en spirale et la troisième section de tube en spirale étant des tubes en spi
