The purpose of this study is to provide basic informations for promoting agricultural cooperations in Northeast Asia. This study tried to enlighten the complementary or competitive relationships between member countries with regard to the agricultural trade. Mutual complementarity and export competitiveness between China, Japan and Korea depend on products. In general, however, complementarity seems to be stronger than export competitiveness in agricultural trade between China and Japan. On the other hand, export competitiveness is stronger in the Korea-China trade. Both appeared to be evident in the trade between Korea and Japan. In the unlimited global competition, Northeast Asian agriculture can survive through regional intra-industry division of labor and trade according to their respective comparative advantage.