Abstract:The ancient Chinese environmental science of astronomy, geography, astrology, psychology, etc. . It is necessary to consult the scholars in advance for the site planning and layout of Royal Buildings, tombs, gardens, etc. , its theory spread to the folk, widely used in villages, residential sites and construction, and gradually evolved into a folk custom culture. Suzhou Humble Administrator's Garden is a model of private garden art. It has been designed and built by officials and merchants in the past, and now it is in its elegant form. This paper analyzes the situation of Humble Administrator's Garden by applying the theory of Canyu school and the theory of rationalism school to explore the application of canyu theory in my humble administrator's garden.