To provide a safety and simple staple capable of easily and quickly fixing an electric wire even on a high place by one hand without using a hammer, like a thumbtack in an electric wiring work in an office, a house and the like, and free from the danger even when it is dropped on a floor and treaded on.

A U-shaped groove 2 is formed on one side of a plastic holder 1, and a staple hole 3 is formed on the other side. A pushpin-type staple 4 capable of freely going in and out with respect to this staple hole 3 is attached, and a head 5 of the staple 4 is pressed by a fingertip while holding an electric wire by the U-shaped groove 2.