Economic globaliza- tion and regional economic integra- tion are the two ma- jor trends of world economic development.In the practice of regional economic integra- tion,the EU and NAFTA as two successful models,has had a significant impact on world economic pattern.Until July 2007,the global effective free trade agreement (FTA) reached 143.In recent years, FTA among developed and developing countries and regions are on the rise.Within regions,such as ASEAN and Japan,China,South Korea, India,Australia,New Zea- land,there have been 14 FTA (including early harvest plan) in operation.To achieve regional economic coopera- tion in East Asia,the key is to build economic integra- tion among China,Japan and South Korea.Therefore,eco- nomic integration among the three is their inevitable choice in the backdrop of economic globalization.While trade integration is the foundation and prerequisite of economic integration,and the former can promote the formation and development of the latter. Economic globalization and regional economic integra- tion of the two ma- jor trends of world economic development. The practice of regional economic integration, the EU and NAFTA as two successful models, has had a significant impact on world economic pattern .Until July 2007, the global effective trade agreement (FTA) reached 143. In recent years, FTA among developed and developing countries and regions are on the rise. Countries, such as ASEAN and Japan, China, South Korea, India, Australia, New Zea- land, there have been 14 FTA (including early harvest plan) in operation. To achieve regional economic cooperation in East Asia, the key is to build economic integra- tion in China, Japan and South Korea. Before , eco-nomic integration among the three is their inevitable choice in the backdrop of economic globalization. Whilst trade integration is the foundation and prerequisite of economic integration, and the former can promote the formation and development of the latter.