The high-frequency treatment instrument includes a treatment section provided at a distal end portion of the insertion section and an operation section connected to the insertion section. The treatment portion includes a cover member attached to a distal end portion of the insertion portion, a first treatment member configured to be rotatable about a rotation axis supported by the cover member, and capable of applying a high-frequency current, and a cover member And a second treatment member which is rotatable about a rotation axis around the rotation axis. The second treatment member has a rod-shaped main body and an insulating tip. The operation portion includes a first drive shaft which is connected to the first treatment member by the first transmission member and which is rotationally driven to rotate the first treatment member, a second drive shaft which is connected to the second treatment member by the second transmission member, And a second driving shaft for rotating the second treatment member by being rotationally driven.この高周波処置具は、挿入部の先端部に設けられた処置部と、挿入部に連結された操作部と、を備える。処置部は、挿入部の先端部に取り付けられたカバー部材と、カバー部材に支持されて回動軸まわりに回動するよう構成され、高周波電流を通電可能な第一処置部材と、前記カバー部材に支持され、回動軸を中心まわりに回動する第二処置部材と、を有する。第二処置部材は、棒状の本体と、絶縁性のチップとを有する。操作部は、第一伝達部材により第一処置部材と接続され、回転駆動されることで第一処置部材を回動させる第一駆動軸と、第二伝達部材により第二処置部材と接続され、回転駆動されることで第二処置部材を回動させる第二駆動軸と、を有する。
