Demise of the bipolar system and intensifying competition for ceonomic developmentj between nations following the end of Cold-War period pose new opportunities and threats to various nations. The emergence of China and ASEAN as important Asian developing countries has attracted attention both of academics and public opinion. China, which already has grown to the world's 6th largest economy, is consistently expanding its influence on international arena, while ASEAN, regarded as a successful regional cooperative model in the third world, is increasing its role in international relations of East Asia and Asia-pacific region. Moreover, the bilaterla relationship between China and ASEAN, which developed rapidly since the post-Cold War era, is showing salient development in realms such as international politics, economics, and security. This article proposes that increasing commitment of China and ASEAN to enhance mutual relationship during the post-Cold War period has been spurred by mutual needs to fulfill their respective foreign strategic objective. Consequently, this article explores the mutual strategy and policy toward each other between China and ASEAN, and the current status of bilateral relationship which are becoming increasingly intimate. Though the process, the article exploresthe implication of the development of Sino-ASEAN relations on respective regions as well as its influence on regional intermational relations.