歐盟成員國於歐盟憲法條約失敗後簽署里斯本條約以重構歐盟諸條約，修訂後的歐盟條約第50條承襲歐盟憲法條約第I-60條，明文承認歐盟成員國之單方退出權，解決長期以來對於退出歐盟許可性的爭議，也因此成為歐盟體制下歐洲整合的指標性立法，然此法規範有無與迄今之歐洲整合思想牴觸，殊有疑義，各該細部規定應如何解釋亦爭議迭生，在英國脫歐公投後更使此等爭議愈加受到矚目，而有釐清之必要。就此，本文認為從歐洲整合的歷史與理論淵源出發觀察歐盟條約第50條，有助於更加精確地建構對於本條之法釋義學思維，爰從歐洲整合的視角爬梳其路徑之爭如何影響吾輩對於本條構成要件與程序規定之解釋與評價，並進一步基於法釋義學的討論探究本條規定對歐洲整合究竟有何重要意義。
The member states of the European Union (EU) signed the Treaty of Lisbon after the failure of the Treaty Establishing a Constitution for Europe to reconstruct treaties of European Union. Article 50 of the revised Treaty on the European Union inherits article I-60 of the Constitutional Treaty and expressly recognizes the unilateral withdrawal right of EU member states from the EU and solves the long-standing problem of permission to withdraw from the EU. It therefore became an indicative legislation of the European integration under European Union regime. However, it is questionable, if it conflicts with the ideology of European integration. How to interpret the details of its provisions is also controversial. After the Brexit referendum, these disputes have become even more noticeable and are necessary to clarify. In this regard, this thesis considers that it is helpful to observe article 50 of the Treaty on the European Union and to construct a legal dogmatic reasoning more accurately from the historical and theoretical origins of European integration. Therefore, this thesis tries to analyze from the perspective of European integration, how disputes over the different paths of the European integration affect our interpretation and evaluation of the constituent elements and procedural requirements of this provision and tries to further explore the significance of this provision for European integration based on the discussion of its legal dogmas.
