Linear underground engineering energy-saving lighting system

The utility model relates to a linear underground engineering energy-saving lighting system, which comprises a voltage reduction device, a low-voltage line mechanism and a plurality of sections of linear double-control lamp strip units, the voltage reduction device is arranged at an entrance of the underground linear project and is connected with a power supply on a construction site; the low-voltage line mechanism is arranged along the internal trend of the underground linear project; the step-down device is in power supply connection with the low-voltage line mechanism; the multiple sections of linear double-control lamp strip units are arranged along the internal trend of the underground linear project; the low-voltage line mechanism is in power supply connection with the multiple linear double-control lamp strip units. The power supply can reduce the voltage to the voltage meeting the working requirements of the linear double-control lamp strip units by means of the voltage reduction device, and supplies