世界上並不存在獨立的“葡國學說”，葡萄牙的刑法理論只不過是大陸法系刑法理論在該國的一個縮影。運用大陸法系的刑法理論，通過對澳門刑法中若干刑事制度的分析，來論證只有大陸法系的刑法理論才是詮釋澳門刑法和推動澳門刑法發展的理論本源並表達了這樣一個觀點：要真正懂澳門刑法，要“知其然”和“知其所以然”，就必須從整體上瞭解和研究大陸法系的刑法理論。

An independent “Portuguese Theory” does not exist in the world. Portuguese criminal law theory is only an epitome of criminal law theory of the Civil Law system that is adopted in Portugal. Based on analysis of some systems designed in Macau criminal law, this article aims to use criminal law theory of the Civil Law system to suggest a theoretical origin which is capable of interpreting Macau criminal law and promote its development. Therefore, the core of this article is that, in order to fully understand Macau criminal law (i.e. to understand both what it is and why it is ), we must know and study criminal law theory of the Civil Law system from a comprehensive perspective.