To provide a cleat attachment to be easily mounted on a rubber boot etc., in cutting wood, etc., in a swamp or on a slippery place such as a slope in mountain forest, etc.

A toe sole part 1 with cleats, a toe cover part 2 covering the upper surface of the toe sole part, and a waist belt part 3 extending backward from the rear end of the toe sole part 1 to be engaged with the waist part of a shoe are integrally formed of an elastic soft material such as natural rubber, synthetic rubber or synthetic resin. A right instep belt 12 and a left instep belt 13 are formed on the right and left sides of the rear end of the toe sole part, so that the cleat attachment and the shoe are firmly fixed by the instep belts with the cleat attachment put on the shoe.