An intelligent street light includes a lamppost and a data transmission system provided at the bottom of the lamppost. The data transmission system includes a data transmission unit, a data exchange unit and a plurality of network devices, which are connected to each other. The data transmission system allows data transmission to be performed between itself and a remote server. This can improve utilization of public resources, reduce construction costs and shorten construction periods of base stations, and effectively enhance coverage of communication signals to improve the quality of communication.