2007 has seen a continuing improvement in the regional economic cooperation in East Asia. Compared to multinational cooperation mechanism，in this region，bilateral cooperation between nations has drawn much attention，in terms of the depth of topics for cooperation and the successful conclusion of some far reaching FTA agreements. On the bilateral side，the framework under which China，Japan and ROK being the main propellers has been gradually formed. These efforts have made a solid foundation for economic integration in the whole region. This paper calls for more stress on the study of a regional integrated framework for bilateral free trade and investment negotiations，which could serve as the stepping stone for economic integration in much larger scale.