Treatment is provided at an ideal timing. Provided is an ultrasonic treatment apparatus (1) including: a therapeutic-ultrasound-wave radiating portion (7) that radiates therapeutic ultrasound waves for causing an ultrasonic treatment material having a tendency to accumulate in an affected area to exert a therapeutic effect; an accumulation determining portion (4b) that determines whether or not the ultrasonic treatment material has accumulated in the affected area; and a determination-result presenting portion (5) that presents a determination result obtained by the accumulation determining portion (4b).
