This article examines the evolution of politics and laws related to sustainable development in China. Sustainable development has been positioned as an economic development strategy many years ago. However, in earlier times, it bore a heavy tint of national strategy, followed by a kind of soft sustainable development with a technological orientation. The recent decade has seen China on track for strong sustainable development. At the present, China is around the turning point of the “Environmental Kuznets Curve,” where both domestic and international multiple pressures are forcing the whole country to make new choices for its dimension of sustainable development strategy. Although sustainable development has been recognized by the legal field of environmental resources, it is still not yet fully integrated into other areas of law. The period from weak to strong sustainable transition is accompanied by another transition, more significant in China, from industrial civilization to ecological civilization. Compared to weak sustainable development, the complex and contradictory character of strength has brought more challenges. Sustainable development of dualism and compromise, which corresponds with the actual needs in China, is an important theoretical basis and practical standards for implementing the scientific view of development. Finally, it concludes by noting that ecological civilization is attempting to solve the problems from a more broad perspective, and to pay more attention to public participation, at the same time to cover the shortage of environmental legislation.