中文摘要：

金融危机后,美元霸权不仅扰乱了全球信用总量、信用创造与真实经济增长之间的平衡关系,更导致新兴市场国家普遍面临输入型通胀、外汇储备贬值等国际金融风险。改革现有的国际货币体系,逐步推进＂去美元化＂进程,摆脱美元陷阱,已经成为国际社会的共识。我国正在致力于推动人民币国际化,东亚地区货币合作是人民币国际化进程中的重要战略步骤。基于对货币替代和最优货币区（OCA）理论的梳理归纳,从现实可操作性、改革成本与利益普惠性的角度比较了人民币国际化与合作推出亚元两种东亚货币合作模式。

英文摘要：

After financial crisis, the hegemony of U. S. dollars not only disturbs total amount of glob- al credit, the balance between credit creation and real economic growth, and further leads emerging market economics to international financial risks such as input inflation and foreign exchange reserve depreciating. It is the common view of international society that we should reform present internation- al currency policy, promote internationalization of Renminbi and get out of pit of U.S. dollars. China is devoted to the promotion of the internationalization of Renminbi and monetary cooperation in East Asia is one of the important strategic steps in the process. This article compares the two East Asia monetary cooperative patterns between the internationalization of Renminbi and the promotion of Asian Yuan based on the induction of the theory of Renminbi substution and OCA from the perspec- tive of realistically practicality and the cost of reform and interest inclusiveness.