中國與東南亞之間有著深厚的地緣關係及無法切割的民族情感；但處於現今經濟快速成長的時代，在能源需求量急速擴張的競爭中，尋求能源供應、保護能源安全，已經是刻不容緩的手段，因此，利用各種外交方式及合作方案來達成此目的，是中國目前所採取的積極作為，冀望在最安全、便利的狀態下獲取、保護最大的能源需求及供應。 東南亞的能源儲藏及供應量，並非是中國能源需求的重要核心地區，但是它位處中國外圍，掌握麻六甲海峽的戰略要衝，以及豐富的天然氣存量，引發各國對此區域的爭奪。再面對此一局勢，中國便加速推動以「和諧世界」為理念，發展「與鄰為善、以鄰為伴」以及「睦鄰、安鄰、富鄰」的外交政策宗旨，進行能源外交及戰略，以爭取能源需求量和鞏固區域內的能源運輸安全及穩定雙方的合作關係。本文即從能源外交策略及作為的架構與理論，就中國對東南亞能源外交的挑戰與競逐做一研析，試圖觀察、探究從雙方的合作關係中所衍生出的問題及產生的困境，以及如何利用外交方式獲得解決之道，並營造出具有前瞻性的宏觀願景。 / Southeast Asia and China are closely connected to each other from the geographical and historical aspects. In the competitive time characterizing with fast economy growing and demands for energy expanded enormously, it has become an urgent measure for China to search for continuous energy supply and protect the energy resources. Today, the initiatives China seeks for is to achieve by means of diplomatic channels. It is hoped that the energy can be acquired by the safest and convenient ways, making sure the maxima energy supply can be assured. Frankly speaking, China did not deem the energy reserves and energy-provide ability of Southeast Asia seriously except that that area locates in the periphery of China, holds an important strategic point for the Strait of Malacca and its abundant natural gas reservoir, all of this attracting fierce competitions among nations. Being beware of this, China therefore based on the idea of “harmonious world” increasingly promotes the diplomatic policies, such as “Good-Neighbor Diplomacy” and “Good-neighborliness, Peaceful-neighborliness, and Prosperous-neighborliness,” engaging in energy diplomacies and strategies with an eye to expanding energy resources, fortifying energy transportation safety within the area, and stabilizing the corporative relationship with the area. Based upon application and theories of energy diplomatic strategies and actions, this thesis analyzes the challenges and competitions that China faces when carrying on energy diplomacy. By observing and exploring the problems and predicaments derived from the cooperative relations of the two sides, we hope that a workable resolution and a proactive vision on energy can be reached via diplomacy.