A surgical operating apparatus comprising, a sheath (18) provided with a distal end part and a proximal end part, an apparatus main body to be coupled to the proximal end part of the sheath (18), a probe (11) which is provided with a distal end part and a proximal end part, is inserted into the sheath (18), and transmits ultrasonic vibration from the proximal end part side to the distal end part side, a jaw (17) which is turnably supported at the distal end part of the sheath (18), and is operated to be opened or closed between a closed position at which the jaw (17) is engaged with the distal end part (3a) of the probe (11), and an opened position at which the jaw (17) is separated from the distal end part (3a) of the probe (11), a handle (49) which is provided on the apparatus main body, and operates the opening/closing operation of the jaw (17), a slider section (65) which is provided in the apparatus main body, and is advanced/retreated to be moved in a central axis direction of the probe (11) between a first movement position corresponding to the opened position of the jaw (17) and a second movement position corresponding to the closed position of the jaw (17) in accordance with the operation of the handle (49), and a notification mechanism (801, 811) for notifying of a state where the slider section (65) has moved by an amount equal to or larger than a set amount on the way thereof from the first movement position to the second movement position.
