The so-called smart sponge city is a sponge city in the construction of the integration of "natural harmony, wisdom, livability, synergistic development" of the concept of smart city construction, through the IoT, big data, GIS, cloud computing and other information technology means, the smart corridor city and all kinds of energy, green facilities in synergy, to achieve sponge The city's fine management, to create a livable and comfortable living environment and achieve sustainable development of the city.

The Internet of Things (IoT) mainly has four key technologies: RFID, sensor network, M2M and the integration of the two

The Internet of Things (IoT) applies a new generation of IT technology in the construction of sponge city, which mainly embeds and equips the sensors into the roads, bridges, soils, green areas, buildings, water supply systems, watercourses, and other objects, and then integrates the "IoT" with the existing Internet. Then the "Internet of Things" is integrated with the existing Internet to realize the integration of human society and the physical system. In this integrated network, there exists a super-powerful central computer cluster, which is able to implement real-time management and control of people, machines, equipments, and infrastructures within the integrated network, and based on which, human beings can manage their production and life in a more fine and dynamic way. This will enable us to achieve a "smart" state, improve resource utilization and productivity, and improve the relationship between humans and nature.