In the case in which a treatment tool that is used together with a flexible endoscope is employed as a slave device, manipulation thereof is performed without losing the operational feeling. Provided is a surgical-manipulator manipulating device (5) 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 (5) including a manual manipulating portion (16) that manipulates a moving mechanism and an electric manipulating portion (17) that manipulates the joint of the treatment-tool distal-end portion, wherein the manual manipulating portion (16) includes a movable portion (16c) that moves the treatment-tool distal-end portion in accordance with the amount of displacement, and the electric manipulating portion (17) includes manipulation input portions (17b and 17c) that drive the joint, and can be secured to the movable portion (16c).
