A wireless monitoring system was carried out to manage the streetlight in Tianjin bonded area. The system adapted a concentric dropping voltage energy-saving mode and the single lamp was monitored without control. The single lamp’s electrical information was trapped by a detecting module and sent to the communication terminal by power carrier technology. Then the collected information of termination was transferred to a remote monitoring center by GPRS communication module. The streetlights in the subsection were on-off by combining timing with illuminance. The practice shows this system is reliable and effective.