This paper makes a case study of flower-and-bird painting and book binding design in China, Chen Zhifo, and explores the decorative features and performance of Chen Zhifo's art, its emergence, background, operation experience, influence and many other factors, thus thinking about the practical significance of decorative language in contemporary China art circles. This paper adopts the methods of philology, stylistics and so on. The research results are as follows: Chen Zhifo shows a common decorative language in both painting and craft. On the one hand, it is based on the national tradition, and on the other hand, it is highly consistent with the western plane composition theory. It is a bold attempt to compromise between China and the West in the field of art design at the turn of the new and the old. Chen Zhifo's decorative language opened up a new direction for the formal development of meticulous flower-and-bird painting, and promoted the modernization of China arts and crafts. Facing the impact of western art thoughts, Chen Zhifo consciously made a response based on national characteristics, and put forward a set of "Chen Zhifo Plan" for the construction of China art decoration system.