Human beings continue to pursue the survival mode of sustainable development. The modernization process of the city makes the contradiction between human travel and traffic safety give birth to the development of smart cities. The development of mobile Internet and Internet of Things technology provides a new integration way for the development of smart street lights. Taking the outline of the city as the design concept, it can be well integrated into the city's traffic and management environment by mounting multiple intelligent devices (5 base stations, charging piles, pedestrian interaction screens, environmental monitoring, wifi transmitters, advertising screens, vehicles and pedestrian monitoring). Considering the complex road traffic environment, the main pole adopts a three-stage structural design, and the high and low lamp arms can adapt to multiple road environments. The "L-shaped" lamp arms highlight the outline of the city, making it particularly eye-catching and harmonious with the surrounding environment.