The utility model discloses an ATM light box energy-saving control system. The ATM light box energy-saving control system comprises a light box. The ATM light box energy-saving control system further comprises a photosensitive sensor and a proximity sensor which can independently work, a main control circuit module used for receiving and processing signals emitted by the above sensors, and a constant current source circuit module which adjusts the current of the light box according to control signals emitted by the main control circuit module. Through adopting the above technical schemes, the brightness of the ATM light box can be adjusted according to the intensity of nature light and the distance of pedestrians; the brightness can be decreased when ambient light is sufficient and no people performs operation, such that electric energy can be saved; and at the same time, an LED light group is adopted to replace a traditional fluorescent light, such that more ideal energy saving effect can be realized.