里斯本條約賦予歐洲聯盟正式的法人身份,並責付成立形同歐盟外交部的「歐洲對外行動署」 (EEAS)協助高級代表達成歐盟國際行動目標。EEAS於2010年12月1日起正式運轉後,內部缺失也逐一顯現,尤其是其創設期間,在歐盟會員國與三大機構間的權力競逐下產生許多政治妥協,其後遺症勢必將影響到未來EEAS的運作成效。本研究試圖從政治與法律層級進行分析,釐清EEAS的組織架構與運作,從其發展背景來分析其當前所遭受的困難,探究歐盟EEAS、乃至歐盟對外政策行動與改革可能面對之問題與未來可能發展之方向。 The establishment of European External Action Services (EEAS) to support the High Representative for Common Foreign and Security Policy is one of the most significant changes in the field of the European Union’s (EU’s) external relations in the post-Lisbon Treaty institutional setting. The EEAS is seen by some to act as the EU’s quasi-foreign ministry. However, the deep-rooted struggle between supranationalism and intergovernmentalism in the EU and the ones for power between the EU’s institutions, the Member States and between the both parties have resulted in some political compromises on the design of the EEAS. Those political compromises not only have shown great impact on this body’s current functioning but would show even greater impact on its future functioning. This article tries to give a wider picture of the establishment and structure of the EEAS as well as its functioning and related obstacles from both political and legal perspectives. This article also brings up a number of issues concerning the EEAS’s (in) capabilities to act and how to fix them.