A plan for developing a new prouct can be regarded as providing consumers with a proper product that has to meet their necessities and demands, which is the basic purpose of a product of a company. For satisfying consumers` necessities and demands fully, it is important to capitalize on an opportunity of a product in a point of tangency between consumers` instant satisfactions and long-term welfares. This means that a product plan should be emphasized not in the aspect of the product itself that has to meet consumers` necessities and demands only, but in the aspect of product that has to be consumer-oriented. Unfortunately, as a plan for manufacturing a product has been regarded as a mere problem of technology up to now, it has been led by technologies and engineers. As a result, products have been manufactured with no consideration of their practical uses. According as consumers` demands are diversifying and products are becoming high-tech and complicated in the current global competition markets, the mainsteram puts the importance of the product competitiveness not on the product based on the technology only, but on the design based on the beauty of the consumer-oriented product. These facts illustrate how the 21st Century can be predicted as "Cultural Economy Age", When the variable of the global competitiveness will be changed into the aesthetical value from the techrnical value of the product. Only grafting traditional culture into the design of the modern society where the intellectual creativeness is respected and the customers` characteristics are diversified can secure the absolute priority in the global competition with other products. In the cases of the advanced countires, the phenomena to inform the other countries of their arts activities and to reinforce their cultural influences on either country are in common at the strategic and politic level beyond the civilian level. Especially, the phenomenon to create an ethnical image by joining their unique traditional culture to the design field is standing out prominently. However, the ethnic culture doesn`t mean its own culture only. On the contrary, the cultural heritage that abounds in the whole world can be revived as its own culture as much as on likes in line with his own capacity. The fact that the America, that has short history and whose cutural heritage is not that great, conquers cultural products(specially in the market of movies) represents in success of creating its own prominent culture by applying its unique information processing technology to the foreign countries. But, it is not easy for on designer to find data required in developing th design in a short time among easy for one designer to find data required in developing the design in a short time among the enormous data throughout the whole world and furthermore, we can promote the efficiency of using the ethnical culture informations by understanding how to apply these informatioms to the design. Accordingly, I will describe effective and practical use of the ethnic culture for the design R&D on this study.