The energy treatment instrument includes a first gripping piece and a second gripping piece which is opened and closed between the first gripping piece and grips a blood vessel between the first gripping piece and the first gripping piece. Wherein the energy treatment tool comprises: a first mode in which the treatment subject is coagulated according to blood pressure of blood vessels held between the first gripping piece and the second gripping piece a first mode in which the treatment subject is coagulated And a second mode different from the first mode for causing the operation mode to be switched.エネルギー処置具は、第1の把持片と、前記第1の把持片との間が開閉し、前記第1の把持片との間で血管を把持する第2の把持片と、を備える。前記エネルギー処置具は、前記第1の把持片及び前記第2の把持片との間で把持される血管の血圧に応じて、前記処置対象を凝固させる第1のモードと、前記処置対象を凝固させる前記第1のモードとは異なる第2のモードと、の間で作動状態が切り替えられる。
