An attachment member for a strap for a guitar includes a shaft-shaped member fixable inside a hole in a guitar body via an adhesive agent; and a holding member continuous with this shaft-shaped member which is positioned outside the hole. The shaft-shaped member includes a first shaft-shaped portion on a distal end side of the member, a second shaft-shaped portion on a base portion side of the member, and a dividing groove formed in the first and second shaft-shaped portions. The first shaft-shaped portion contacts the hole inner circumferential surface. The second shaft-shaped portion forms a space between itself and the hole inner circumferential surface for containing the adhesive agent. When inserted, the first shaft-shaped portion is deformed in conformity with the hole internal surface configuration while narrowing the groove width of the diving groove. A shaft-shaped member can be firmly and easily fixed inside a hole.