To provide a structure capable of high frequency treatment, to accurately and efficiently execute the work of the piercing/peeling or the like of a treatment object part and to safely perform the high frequency treatment even at the time of being simultaneously used with another high frequency treatment tool.

For these hook type forceps, two hooks 21 and 22 are provided on one end of a shaft 3 and at least one of the two hooks 21 and 22 is movable along the shaft 3. In this case, a part or all of at least one of the hooks 21 and 22 is formed by forming a conducting part exposed to the outside by a conductive material, the conductive shaft 3 electrically conducted to the conducting part at the tip part and a connector part 14 for connecting a high frequency power source to the shaft 3 are provided and further, an outer surface part excluding the conducting part of the respective hooks 21 and 22 is covered with an electric insulation material.