Provided is a surgical-manipulator manipulating device for manipulating a surgical manipulator including a treatment-tool distal-end portion having at least one electrically manipulated joint disposed at a distal end of an inserted portion of a flexible endoscope and a manual moving mechanism that moves the position of the treatment-tool distal-end portion, the surgical-manipulator manipulating device including a manual manipulating portion that manipulates a moving mechanism and an electric manipulating portion that manipulates the joint of the treatment-tool distal-end portion, wherein the manual manipulating portion includes a movable portion that moves the treatment-tool distal-end portion in accordance with the amount of displacement, and the electric manipulating portion includes manipulation input portions that drive the joint, and can be secured to the movable portion.