The center of global economy is moving eastwards while the economic recessions took place in EU，U.S. and Japan during the financial crisis. On the contrast to the fact that western economies’ leading power is declining，the trading and economic influence of Northeast Asia as a whole appears to rise and multilateral coordination mechanisms among Japan，South Korea and China maintain energy，which may contribute to the potentially sustainable development of the region into a fresh vitality，and Northeast Asia is expected to be an engine for global economic growth in the next 30 years. Meanwhile，the residual of Cold War in this region has not completely subsided，such as current gunfire between North and South Korea，many disputes on islands sovereignty，the U.S. aggressive involvement into Northeast Asia and strengthening US-ROK-Japan military alliance. As a result，the regional cooperation in Northeast Asia is also going to be challenged by those uncertain risks on geopolitical security.