Economic development brings along strong energy demand. Northeast Asia is one of the regions with the most potential for further energy development in the world. Due to the complex geopolitical dilemma, barriers haven't been eliminated in energy trade and investment; therefore, there is more competition than cooperation among the States in this region. The energy market of each State has not been interconnected, and the energy market integration progress is slow. This paper investigates the current situation of energy cooperation in Northeast Asia and the necessity of energy market integration. It analyzes the legal challenges faced by the integration of the energy market in Northeast Asia and examines instruments available to the integration. This paper proposes that Northeast Asian States should work together to eliminate energy trade and investment barriers, improve the level of interconnection in their energy markets, promote the efficiency of resource allocation, and deepen the regional market integration.

经济发展带来了强劲的能源需求。东北亚是世界上能源进一步发展最具潜力的地区之一。由于复杂的地缘政治困境，能源贸易和投资的壁垒并未消除；因此，该地区各国之间的竞争大于合作。各国能源市场尚未互联互通，能源市场一体化进展缓慢。本文考察了东北亚地区能源合作的现状和能源市场一体化的必要性。它分析了东北亚能源市场整合所面临的法律挑战，并研究了可用于整合的工具。