With the continuous development of human society, cities will carry more and more population in the future. At present, China is in the period of accelerating urbanization, and the problem of "urban disease" in some areas is becoming increasingly serious. In order to solve the problems of urban development and realize the sustainable development of cities, the construction of smart cities has become an irreversible historical trend of urban development in the world. The key means of city information, intelligent operation and operation, including the city's intelligent information system, operation and operation, is the key to the city's information, operation and operation. The smart public service and urban management system will be built by using top technologies such as visual acquisition and identification, various sensors, wireless positioning system, RFID, barcode identification, and visual tags.