Abstract: In the research of “returning to the country” since 1980s, “national growth” is a new theme, which means the dual innovation of national theory in methodology and theory. From the perspective of political ecology, the growth of a country is first manifested in the growth of national elements. The elements of national growth are divided into basic elements, organizational elements and growth mechanism. The basic elements establish the country. With the development of the basic elements, the growth of the organizational elements is the main performance of the national adjustment period, and the formation of the development means that the country enters a stable period. When the growth mechanism germinates and gradually becomes the mainstream of political life, the growth of the country enters a mature period. In different periods of national growth, the source power comes from the society, so the state-social relationship mechanism is the most important. Different social forms and development processes lead to different ways of combining the state and society, and the growth of a country presents an unbalanced pattern (the same is true of the international community). The theory of state growth not only challenges the existing state theory, but also expands the logic, method and field of state research. Based on the theory of state growth, the relationship between state and society needs to be reexamined. Especially in the post state growth period, society will enter into an interconnected community, and our goal is to promote the construction of a community with a shared future for mankind.