PROBLEM TO BE SOLVED: To increase the power for pressing a branch against a saw blade and reduce the labor of an operator. SOLUTION: This tool 1 is capable of bending and deforming a branch 31 due to the action of a load W such as a branch cutting tool 1 on the branch 31 when a pawl 31 of a hook 16 is hooked on the branch 31, making the reactional force F of the branch 31 act on the hook 16, rotating the hook 16 with the rotation fulcrum 17 as the center and pressing the branch 31 against a saw blade 2. At this time, the rotation fulcrum 17 of the hook 16 is eccentric from the axial center C0 of an operating shaft 4 and the rotation angle of the hook 16 can be increased from that of a conventional example by the extent L of eccenstricity. Thereby, the branch 31 can be pressed against the saw blade 2 with a sufficient force and the branch 31 thicker by the extent L of the eccentricity can be cut.