I wish to examine plan about megalopolis formation with Japan and Busan, possess location condition that can be injured to center hub of North-east Asia. First for this, through competitive analysis of Korea and Japan in industrial structure, I will search competition relation. Second, examine what exports and specialization industry of two area are, through industrial structure of Busan and Kyushu area of Japan. Third, to form megalopolis, wish to present what business belt that can bind two area. Fourth, I wish to present preview point about this study in the conclusion. Examine from 2004 to 2007 through exports, degree of trade join(combination), index of trade specialization degree, index of Revealed comparative advantage, and etc, for analysis of this study how in changed industry competitive between two countries or two area have changed.