本文的目的，是要論述史密特1912-1933年間法學思想的內在邏輯與系統結構。我認爲，史密特的法學思想屬於他所說的「決斷論」思想類型；並且，史密特之所以會形成其決斷論思想，基本上是由其法學研究的出發點——法實現與法實踐——所決定的。從史密特思想的形成史上看，他的整個決斷論思想固然是由「法實踐的決斷論」出發，再逐漸發展出「主權的決斷論」以及「政治的決斷論」，但就其內在邏輯與系統結構的觀點而言，則順序剛好相反：後來發展出來的思想，乃是先前思想的基礎。

The aim of this paper is to explore the inner logic and systematic structure of Schmitt's legal-political thought between 1912-1933. I argue that Schmitt's legal thought belongs to the type he called "decisionism" and that the development of his decisionism is determined by the starting point of his legal studies, namely Rechtsverwirklichung and Rechtspraxis. Starting from "decisionism of Rechtspraxis," Schmitt develops his decisionism step by step to what may be called "decisionism of sover­eignty" and "decisionism of the political". From a systematic point of view, each development offers a basis for the earlier developed thought and all these three parts form an autonomous "type" of legal thought.