The Church is a superordinate concept that expresses the indivisible unity of God's people, comprised of clergy and baptized lay individuals. The administration and discipline of this unity are achieved through laws. Canon law, on the other hand, is a living system encompassing these laws, produced and shaped by the clergy and modified in various ways throughout history. The supreme authority of this living system is the Papal See. With legislative, executive, and judicial powers, the Papal See, through these laws, determines the conduct of the Church and its members in judicial, administrative, and religious matters. This study examines the historical history of Church law and presents the formation, classification, and analysis of the Codex Juris Canonici, the current legal text.