An ultrasonic surgical system includes an output circuit (81) configured to generate a driving power, an ultrasonic transducer (24) connected to the output circuit (81), and configured to convert the driving power into ultrasonic vibration, a probe (180) connected to the ultrasonic transducer (24), and configured to transmit the ultrasonic vibration, an excision unit (181)provided in the probe (180), the excision unit (181) being in contact with a predetermined portion of the cartilage, heating the predetermined portion of the cartilage by ultrasonic vibration converted based on the driving power, and excising the cartilage by receiving pressure by an operator while being in contact with the cartilage, and a controller (82) configured to control the driving power output from the output circuit (81) so that the predetermined portion of the cartilage is heated to a temperature of 120°C or higher within 2.2 seconds.
