To provide a simple structured and inexpensive non-slip tool for a foot, which is easy to wear for children, physically challenging persons and aged persons without any help without, causing uncomfortable feeling.

This ring-shaped non-slip tool for the foot comprises a net flat belt base material the width of which covers from the arch of foot in the longitudinal direction to the base of a toe and which can wind till around the instep, a fixing means provided detachably to both ends of the net flat belt base material in the direction of winding thereof, and a toe holding part for holding the net flat belt base material to the toes. The toe holding part is preferably composed of a cord located between the thumb and second toe of the foot when the net flat belt base material is wound around, or a ring-shaped body positioned on the backside of the thumb of the foot when the net flat belt base material is wound around.