Abstract: Smart city is a complex project. At present, there is no long-term mechanism for overall construction, operation and management. Based on the value construction of the whole life cycle of smart city, this paper proposes to build a long-term mechanism with top-level planning, collaborative development, sustainable operation, integrated technical route and scientific evaluation. In addition, this article suggests using county-level smart cities as pilot innovation bases and building smart city clusters.

Key words: smart city, long-term mechanism, coordinated development, construction mode, sustainable operation, business model