Under the sudden change of competitive environment, the economic cooperation as a part of survival strategy is being a big issue among countries. There was much discussion based on the geological adjacency as well as cultural homogeneity regarding the economic cooperation of three countries, Korea, China, Japan. It has been also known that major trade countries of the world concluded the treaty of region trade, then extended the number of export, and drew a success in foreign direct investment. It can be considered that Korea will play a major role in the three countries' automobile industry based on Japanese demonstrated technology, Chinese resources, market and experience with their economic cooperation. Therefore it is expected that a big result will be achieved throughout such a role play of each country. This paper has a purpose to light up the distinctive quality and the present condition of each country in automobile industry, and to promote the foundation of three countries' economic cooperation. It is convinced that the economic cooperation of three countries, Korea, China and Japan in automobile industry, will play a great role in the world automobile market.