The invention discloses a streetlamp monitoring system. A timing lamp turning on and off module of the streetlamp monitoring system is used for turning on and off lamps regularly every day, a timing light adjusting module is used for setting different light brightness at different time every day, a fault monitoring module is used for inquiring streetlamps with faults according to the streetlamp monitoring information of the streetlamps, an anti-theft alarm module is used for sending anti-theft alarm information to a monitoring center, a data collection module is used for receiving and processing information of the timing lamp turning on and off module, the timing light adjusting module, the fault monitoring module and the anti-theft alarm module to achieve communication between the streetlamps and the monitoring center, and a remote monitoring module is arranged in the monitoring center and used for sending the streetlamp monitoring information to a mobile monitoring device. Turning on and off and brightness of the streetlamps can be adjusted regularly according to weather and seasons, a geographic information module rapidly determines the locations of the faulted streetlamps or stolen streetlamps, specific circumstances are known through a monitoring camera at the monitoring point, remote monitoring is achieved through the remote monitoring module, and the degree of intelligence is high.