A surgical operating apparatus includes a sheath (18) having a distal end portion and a proximal end portion, a shaft-shaped probe body (11) which is inserted in the sheath (18) and has a distal end portion and a proximal end portion, and in which ultrasonic is transmitted, a probe distal end portion (3a) which is provided at the distal end portion of the probe body (11) and constitutes a first electrode section which is one of bipolar electrodes, and a jaw (17) which is rotatably supported on the distal end portion of the sheath (18), has an engaging surface which is engaged with the probe distal end portion (3a), and has a second electrode section which is the other of the bipolar electrodes, wherein the jaw (17) includes, at a distal end portion of the engaging surface (206) for engagement with the probe distal end portion (3a), a distal end chip (208) which tolerates a positional displacement relative to the probe distal end portion (3a) when the jaw (17) is engaged with the probe distal end portion (3a).
