boyuta ulaşmıştır. Bununla birlikte Rusya ve Çin'in mevcut konjonktürde izlediği politikaların işbirlikçi olması nedeniyle, MİY ile AEB arasındaki ilişkinin tamamlayıcı yönü ağır basmaktadır. AbstractVisibilities of Russia and China began to increase in international arena, after the 2008 Global Financial Crisis. Within this context, while Russia tries to imply policies to prevent Western influence toward ex-Soviet region and their cooperative initiatives with regional actors; China, who is one of the biggest economy in the world thanks to production capacity and its accumulation of capital, aims to raise its political effect and enhance sphere of influence as did in economic field. These two states, that are located in Asia, cooperate in various areas and lead Eastern frontier against to Western hegemony, make regionalization efforts in their own geopolitical and geoeconomical interests in the continent. On the one side, Russia adopts classical regionalism understanding which is shaped by political motivations, has geographical boundaries, exclusive and strict institutional mechanism, and eligible for nation-states; on the other hand China indigenises new regionalism approach that is surrounded by economical goals, has distanceless and borderless characteristics, inclusive and flexible mechanism, and open to all actors in international arena. In this direction, while Russia tries to maintain its influence over and dependency relationship with ex-Soviet countries through Eurasian Economic Union (EAEU) which is output of twenty years process; China aims to revive old Silk Road geography and puts itself in the center politically and economically via One Belt One Road Initiatives (OBOR), also known as Modern Silk Road Project. In this paper, China's and Russia's regionalism understandings had been evaluated within the scope whether they are cooperative or complementary by taking into consideration their needs and positions in international arena. As a result of this assessment, Chinese OBOR contains and overcomes Russian EAEU, thanks to its economical advantages, better bilateral and multilateral relations with other actors in the international society and inclusive regionalism understanding. By dint of these countries' converging policies in international issues, bilateral relationship of OBOR and EAEU turns the scale toward complemantary situation.