Electric bending endoscope

An electric bending endoscope is characterized by comprising an elongate insertion portion (22) configured to be inserted into a lumen and provided with a bending portion (26) configured to be actuated to be bent, a drive unit (29) connected to a proximal end portion of the insertion portion (22) and configured to generate a drive force to actuate the bending portion (26) to be bend, and an operation unit (36) configured to be held by an operator and operate at least a bending actuation of the bending portion (26), wherein the drive unit (29) and the operation unit (36) respectively include a drive unit side electric contact portion (48) and an operation unit side electric contact portion (43) configured to be coupled to and separated from each other by moving the drive unit (29) and the operation unit (36) close to and apart from each other in a coupling and separating axial direction, and the drive unit (29) and the operation unit (36) includes a lock mechanism (53, 54; 53a, 54a; 53b, 54b) configured to lock and unlock the drive unit (29) and the operation unit (36) to and from each other with respect to the coupling and separating axial direction.