The utility model relates to a small stone floor construction instrument of making a slip, including the clamp plate, be equipped with the branch of a vertical setting respectively at the both ends of the upper surface of clamp plate, be equipped with a horizontal pole respectively on every branch, be equipped with the chute that corresponds with the small stone surface phase of consulting in succession on the lower surface of clamp plate, be equipped with a flange at the one end tip of clamp plate, the distance of lower terminal surface to the clamp plate upper surface of flange is the same with the distance between the clamp plate upper surface bottom with the chute. The above technical scheme is adopted in the utility model, it is more simple and convenient to be under construction, before concrete final set, from on one side to the parallel construction of another side just, do not use concrete grinding machine before like, a little repaiies out the shape, wastes time and energy, has improved the efficiency of construction greatly, the size in the zigzag ramp of producing moreover is more accurate, lines are more straight, the impression good.