A 5G intelligent street lamp control system for a smart city comprises a control circuit composed of a main chip and a main chip peripheral circuit, and the main chip peripheral circuit comprises a clock circuit, an LED indicator lamp circuit, a USB to serial port module circuit, a battery charging circuit, a voltage division circuit, an SRAM circuit, a JTAG circuit, a reset circuit, a peripheralcircuit which is composed of a display circuit, a memory circuit, a camera circuit, an alarm circuit, a sensor circuit, a key circuit and a relay driving circuit, and a communication circuit which iscomposed of a WiFi module circuit, a 5G communication module circuit, a GPS module, an internet access module circuit, a wireless module circuit, a Bluetooth module and an NB-IOT module. According tothe invention, the 5G communication technology and the Internet of Things technology are used to realize the technical effects of intelligent street lamp energy saving and real-time operation condition feedback so as to ensure timely maintenance and energy consumption feedback of the faulted street lamp.