This article analyzes Nietzsche's perspective on the genealogy of punishment, grounded in his critique of the Kantian Categorical Imperative. As a philosophical method, genealogy entails a revaluation of all moral values by questioning their foundational principles, scrutinizing the validity of their definitions, and ultimately subjecting them to critique and reassessment. The categorical imperative obliges all individuals to act according to a universal law, irrespective of their personal desires or goals. In his critique, Nietzsche examines the theological underpinnings of Kantian thought, particularly the conceptual origin of God and the infusion of divine values into state-sanctioned punishment. He argues that while the right to punish originates in retribution for the harm a criminal inflicts upon a victim, the state has decoupled punishment from personal vengeance. Instead, it has ascribed this right to an impersonal, public entity, such as God or society. Consequently, this process generates an intensifying reservoir of psychic energy, which is conceptualized as "eternal punishment." This foundational study presents Nietzsche's genealogical analysis and explores its relevance to contemporary critical perspectives on state legal policies, thereby contributing to the theoretical literature on the genealogy of punishment.