Endoscope snake bone convenient to bend

The invention relates to the field of medical instruments, in particular to an endoscope snake bone convenient to bend, which comprises an isolating layer and a plurality of annular structures, the isolating layer is a hollow tubular elastic piece, and each annular structure is circumferentially fixed on the outer wall of the isolating layer in a surrounding manner; and the plurality of annular structures are not in contact with each other along the length direction of the isolating layer and are separated from each other by a certain distance. Through the isolation layer and the multiple annular structures fixed to the isolation layer, the annular structures are separated from one another, when the snake bone is bent, the adjacent annular structures do not interfere with one another, meanwhile, the enough bending angle can be ensured, meanwhile, the isolation layer can ensure that a channel in the endoscope is isolated from the outside, and therefore the endoscope is more stable. Influences caused by bending