A bending operation device 70, includes: a bending lever 45 that is inclinably supported with respect to an operation section 3 of an endoscope 1 an arm part 54b that is provided in the bending lever 45 and includes a distal end displaceable in conjunction with inclination operation of the bending lever 45 and an intermediate lever 62 that is swingably supported with respect to the operation section 3, includes a force point 62a at a middle of the intermediate lever 62, and includes a point of application 62b at a position farther from a fulcrum (a shaft portion 63) than the force point 62a, the force point 62c being connected to the distal end of the arm part 54b through an intermediate wire 65, and the point of application 62b being connected to a bending wire 23.
