To provide an eaves gutter cutting implement which can be simply attached/detached, which can prevent an eaves gutter from being cut obliquely with respect to a length direction of the eaves gutter, and which can also be suitably used in the use of a motor-operated circular saw, a chain saw and the like.

This eaves gutter cutting implement comprises a main body part 11 which is used by being fitted outside the eaves gutter 2 in the cutting of the eaves gutter 2, so as to fit a main body part of the eaves gutter, and a pair of lug holding parts 12 and 13 which are integrally provided at an upper end of the body part 11 so as to hold both selvage parts of the eaves gutter 2; a wide overhanging piece 14 is integrally provided in the state of being elongated from the tip of one lug holding part 12; and a tip of the overhanging piece 14 is positioned inside the eaves gutter 2 with respect to an inner edge of the lug part 21 of the eaves gutter 2.