區域內的制度運作，不僅影響其內部成員的行為與政策制訂，也會衝擊其他區域的政策推動。以歐元的歷程為例，在歐盟內部不僅是各會員國流通的單一法定貨幣，更是接軌經濟整合的契機，也形塑區域整合的典範，外溢至其他區域，亞洲所推動的共同貨幣政策即有學習歐洲發展的脈。本文希冀透過新區域主義(new regionalism)為分析主軸，研究歐洲與亞洲的共同貨幣政策，並試圖比較其發展脈絡與趨勢，藉以理解區域間政策的互動型態。

The prospects for the theory and practice of regionalism in the wake of
financial crises provided a key rationale for comparative regionalism. Two
particular issues spring to mind: the relationship between “area studies” and studies of regionalism and the more specific question of “EU studies” in the analysis of the regional processes.
Asia region realizes the importance of the financial cooperation of currency inside the district in East Asia after 1997 financial crisis, the Asian Development Bank again puts forward the concept of “the monetary unit in Asia”(the Asia Currency Unit, ACU) in 2006. After Euro promotes successfully, the Asia Development Bank also expects East Asia region can develop the monetary unit, enhances the development of the regionalism, increases the benefit of the regional integration, so the process the European currency unit policy is the basis of reference. Under the context, I also want to explore the process of international socialization by the index: common interest and state learning.
By researching the Europe and Asia monetary policy, I hope to construct the
structure of the comparative regional research, and also hope to figure out the solution during the development process of monetary policy in Asia.