To easily and stably obtain the skating rink optimum for the curling competition and the ice skating by placing the non-woven fabric comprising lines, patterns characters or the like necessary for the competion on a leveled base with gravel earth and sand or the like, sprinkling the water onto the same, and freezing the same by the natural cold.

The concrete is applied onto the ground surface capable of forming a skating rink to be used as a base 2. The base 2 can be also prepared by leveling the gravel, earth and sand or the like in flat. A dry non-woven fabric 1 of polypropylene is placed on the base 2, and fixed by the anchor pins. A center line is drawn with color on the surface of the non-woven fabric 1, and a house mat 5 made of the non-woven fabric of same quality is placed. The house mat 5 is a circular sheet, and an aim of a concentric cycle is drawn with color. Further the foggy water is sprinkled on the non-woven fabric 1, and primarily frozen. Then the water sprinkling and freezing are repeated several times to cover the whole surface of the non-woven fabric 1 and the mat 5, whereby the ice 3 of flat surface is formed.