The development key point of world economy is gradually transferred to theAsia Pacific Zone, and the development key point of Asia Pacific economic zone focuses on the East Asia. As a result, a blue-printed plan of the ¡§East Asia economic zone¡¨ attracts the attention of all people in the world. There is no doubt that one day ¡§East Asia economic zone¡¨ will play an important role in world economy. Besides, with the developmental trend both of Global Economic integration and of regional bloc, the strategy of one-nation module will no longer work. Nations should follow EU, NAFTA, ASEAN and APEC, and unite together for mutual benefit of making themselves more competitive and of winning a more important position in the new world economy. Since both sides of the Taiwan Straits join the WTO, on one hand, our domestic market has opened gradually, and on the other, Mainland China¡¦s economy has grown quickly, winning a important role in International organization of economy and trade. The proposals regarding regional economic integration, such as ¡§ASEAN plus one¡¨ and ¡§ASEAN plus three,¡¨ enhance Mainland China influence on neighboring nations. After Mainland China signed the trade agreement(CEPA) respectively with Hong Kong and Macao, marginalizing Taiwan¡¦s economic and trade. As a result, cooperative institution, such as common market, across both sides of the Taiwan Straits is necessary. The stably economic exchange between the two sides of the Strait is one of the critical factors of estimating the stabilities of Asia Pacific economic zone¡¦s development. After the two trips succeeded, one is Kuomintang¡¦s chairman Lien Chan¡¦s trip on the 26th April, this yean and the other is People First Party¡¦s chairman James Song¡¦s party on the 5th May, make the blue-printed plan of common market between the two sides of the Strait practicable. Global Economic integrationRegional Economic integration¡Beconomic and trade marginalization¡Bcommon market¡Bcooperative institution