Tianyi Pavilion Bookstore sits north and south, for two-story brick and wooden structure of the hard mountain top heavy building, the height is 8.5 meters, the slope roof, the green tiles are covered. One level is wide, the depth is six, the second floor is a large room except the stairwell, with a bookcase space. The garden is chiselled in front of the pavilion "Tianyichi" Tongyue Lake, and the garden is made of "Fu, Hao, and Shou" as the overall shape, and the mountains and stones are piled into "Jiushi Yixiang" and other attractions. Tianyi Pavilion and its surrounding gardens have Jiangnan courtyard garden characteristics. The collection and architecture of Tianyi Pavilion provide physical information for the study of calligraphy, local history, stone carvings, stone structure buildings and residential buildings in eastern Zhejiang.