Abstract:The book Xian Qing Ou Ji written by Li Yu is the review and summary of the writer's whole design-career. The "JuShi" part of Xian Qing Ou Ji which systematically presented the aspects of park life has neatly summed up Li Yu's philosophy of gardening and aesthetic taste. In the book, Li Yu emphasizes the problem on actual operating layer surface, not only staying theoretically. Li Yu's thoughts and skills focus on using certain and simple principle to pursue creative and elegant design which were not only of great importance in enlightening his age and society, but also of value on the current study of classical gardens.