对刑罚必要性的考量不能仅以法律为立足点,更要站在哲学的角度进行思考。国家独占着刑罚权,刑罚的必要性从一定程度上来说取决于报应的正当性和预防的功利性。本文分析了自然法学派代表人物的国家观,着重从国家的理论起源来讨论刑罚存在的必要性与正当性。 Consideration of the necessity of punishment can not be based solely on law, but more on the philosophical point of view. The state monopolizes the right of punishment and the necessity of punishment depends to some extent on the legitimacy of retribution and on the utility of prevention. This article analyzes the viewpoints of the representative of natural law school on the state, emphasizing the necessity and legitimacy of discussing the existence of punishment from the origin of the country.