The countries of Northeast Asia have close ties and wide range of links in politics, economy, culture and geography. These countries have abroad humanistic foundation. It is of great significance to strengthen the regional cooperation in Northeast Asia under the vision of building the community of a shared future for mankind. This is conducive to safeguarding peace and stability in Northeast Asia, safe guarding the overall interests of Northeast Asia, promoting the common development of Northeast Asia, and realizing the “the Beltand Road” initiative. The idea of building the community of a shared future for mankind opensa new way of thinking for regional cooperation in Northeast Asia: focus in gon strengthening economic cooperation an destablishing cooperation mechanisms; strengthening mutual trust of political security and maintaining regional peace and stability; dealing with non-traditional security issues and curbing extremism; building a common concept and deepening regional identity. Therefore, building the community of a shared future for mankind and promoting regional cooperation in Northeast Asia can realize the overall realization of regional integration in Northeast Asia.