To provide a distal end portion structure for an endoscope shaft that is inexpensively manufacturable, is bendable in an arbitrary direction at an arbitrary angle and is fixable in a bent state.

An endoscope shaft with a bendable cylindrical distal end portion 2 is bendable by means of an operating device. The cylindrical distal end portion 2 has at least one decentralized hose member extending along the end portion. The hose member is shaped into a plurality of directly united expansion bellows, and forms a continuous pressure chamber longitudinally expandable when pressure is applied.