Abstract: “The Belt and Road Initiative” proposed by the Chinese government has entered the implementation stage and has made great progress. From the perspective of history and reality Northeast Asia is an important region for exchanges between the East and the West, hence an important part of the “The Belt and Road Initiative”. However, due to the complicated international relations and the opposing international situation in Northeast Asia, it is difficult for the economic cooperation in Northeast Asia to develop. Recently, the improvement of the international situation in northeast Asia, represented by the transformation of ChinaJapan relations and the relaxation of the situation on the Korean peninsula, has created conditions for the development of regional economic cooperation. If the trends above continue, the international cooperation in northeast Asia will achieve rapid development and form benign interaction with “The Belt and Road Initiative”, which will serve as an important component of “The Belt and Road Initiative” and effectively promote the rapid realization of the initiative.

Key words: northeast Asia cooperation, “the Belt and Road Initiative”, thirdparty cooperation, ChinaJapan economic relations