Many building materials' outward appearance becomes very ugly with the lapse of time, needs to be cleaned up frequently and maintain. But because of its permanence, natural stone material receives the favor, even if passes through for several dozens years, its outward appearance maintains invariable. Moreover the cost of natural stone material's maintenance is inexpensive. Its another outstanding feature is the high-capacity for storing heat. It forms a obvious contrast with modern glass building constitution. The internal system is constructed by natural stone material only need the very few energies for heating and refrigeration. The natural stone material may absorb the quantity of heat which the sun sends out and can prevent the indoor temperature to rise excessively high.