Abstract: As the biggest economies in East Asia, China and Japan compete with each other via international institutions in order to win the regional leadership. Therefore, the two countries show different preferences when making choices among various regional cooperation institutions such as “10+3” and “10+6”. To be specific, SinoJapan relation, as well as the institutional competition between China and Japan, would intensify as the strengths gap between the two countries widens, and the involvement of US in East Asia increases. However, with the tendency of strategic contraction of US, China and Japan should work beyond the traditional competitive logic, and also develop new paths to cooperate while still competing during the process of promoting integration in East Asia.

Key words: China , Japan , US , institutional competition , regional leadership in East Asia

摘要： 中国和日本作为东亚地区最大的两个经济体，为赢得东亚地区合作主导权展开了激烈的制度竞争，两国对“10+3”、“10+6”等不同地区合作机制有着不同的利益倾向与选择。具体而言，中日两国实力差距越大，美国在东亚的制度性介入程度越深，中日两国关系可能相对越发紧张，彼此之间的制度竞争也将越激烈。在当前美国战略收缩的趋势下，中日两国需超越传统的地区主导权竞争逻辑，探求新的竞合路径以推动东亚地区未来一体化发展。

关键词: 中国 , 日本 , 美国 , 制度竞争 , 东亚合作主导权