The development of Mou Zong-sans aesthetics thought and its improvement have close relationship with Kants. The peculiar status of Kant’s aesthetics thought has determined the origination of Mou Zong-sans aesthetics thought. In addition, the spiritual argumentation of Kants aesthetics thought has directly influenced Mou Zong-san to pay his attention to the aesthetics issues and the orientation of morality aesthetics. Kant has regarded beauty as the “mediation theory” for the communication between nature and freedom, which has aroused Mou Zong-san to argue for his viewpoints, i.e. “unification of aesthetics and morality” in his old age.