In an endoscope bending tube provided in a bending portion of an endoscope in which a first bending tube region and a second bending tube region are arranged, a slit width of a plurality of bending slits arranged in the bending tube region is set to be smaller than a slit width of a plurality of bending slits arranged in the bending tube region, a width of the bending slits on the distal end side between the neighboring bending slits is set to be smaller than a width of the slits on the proximal end side, and an interval between the neighboring bending slits of a slit row in the bending region located on the distal end side is set to be smaller than an interval between the neighboring bending slits of the slit row in the bending region located on the proximal end side.
