This paper focuses on three aspects of John C. H. Wu's later thought of natural law, namely, the changing natural law, the intuitionalist perspective of natural law, and the personalist perspective of natural law, paying particular attention to how he synthesized and transcended the opposing legal and philosophical schools in the past, and how he creatively interpreted St. Thomas Aquinas' theory of natural law according to his own Chinese philosophical tradition. Finally, this paper hopes to conclude and evaluate Wu’s later thought of natural law.