The system uses the Japanese Mitsubishi PLC as the main control core and the intermediate relay system for signal acquisition and conversion, mainly composed of the data processing module, grid monitoring module, wireless communication module, remote controller, the speech recognition module, display module, sensors, switching output module, and the UPS power supply. It can be achieved when power outages occur, the system automatically enables the generator for power supply, and when the power supply returns to normal, it can restore the function of the mains power supply automatically. In order to improve the stability of the system, there are the functions of fault alarm, remote reset, and remote query, etc., which can realize seamless switching between the mains and the generator and effectively avoid the data loss, data delay, network interruption, etc., resulted from the instability of the mains power supply, and solve the power supply problem for base stations, especially at night.