An ultrasonic treatment apparatus according to the present invention includes: an oscillation unit which selectively oscillates a plurality of ultrasonic signals a data table which includes a plurality of data rows storing in advance frequency data of the ultrasonic signals, at least one data row among the plurality of data rows storing specific frequency data and other frequency data such that a storage amount of the specific frequency data is larger than that of the other frequency data an operation unit which select one application data row from the plurality of data rows a plurality of ultrasonic oscillators which include a plurality of resonance frequencies a plurality of connectors to which the plurality of ultrasonic oscillators are each connectable a plurality of switches which are each connected to the plurality of connectors and a control unit which, in order to apply an application ultrasonic signal selected based on the application data row among the plurality of ultrasonic signals to one application ultrasonic oscillator among the plurality of ultrasonic oscillators, controls the plurality of switches so as to selectively apply the application ultrasonic signal to an application connector connected to the application ultrasonic oscillator, among the plurality of connectors.
