This high-frequency treatment tool includes a treatment part which is provided at a distal end of an insertion part, and a manipulation part which is coupled to the insertion part. The treatment part has a cover member which is mounted on the distal end of the insertion part, a first treatment member which is supported on the cover member, which is configured to rotate about a rotating shaft, and to which a high-frequency current is capable of being applied, and a second treatment member that is supported on the cover member and is configured to rotate about the rotating shaft. The second treatment member has a rod-shaped main body and an insulating chip. The manipulation part has a first drive shaft that is connected to the first treatment member by a first transmission member and is rotatably driven to rotate the first treatment member, and a second drive shaft that is connected to the second treatment member by a second transmission member and is rotatably driven to rotate the second treatment member.
