Abstract: Under the trend of the development of the times and the requirement of people, architects pay more and more attention to the design of the small city.According to design concept, layout, landscape design, architectural design of new technology healthy and environmental design as well as some details of the design, the paper combines with the project design examples and takes the green energy of small cities as the theme in order to achieve the aim of building the green, healthy, energy-saving and ecological high-quality living environment.