Provided is a night illumination remote control system for a transformer station digital monitoring system. The transformer station digital monitoring system mainly comprises digital cameras installed in a transformer station. The digital cameras are connected with a monitoring host computer through an Ethernet interface. The night illumination remote control system comprises alarm output switch contacts on the digital cameras. Each alarm output switch contact is connected with a time-delay control circuit composed of a time-delay relay, a power relay, and respective operating power circuits. The operating power circuit is composed of a power input end and an output switch contact. The power input end of the time-delay relay is used as a time-delay control circuit to be connected with the alarm output switch contact on the digital camera. The output switch contact of the power relay is used as the output of the time-delay control circuit to be connected with both ends of an illuminating lamp. The night illumination remote control system is reasonable in structure, convenient to use, and capable of performing remote control light turning on and automatic time-delay light turning off, and has characteristics of convenient flexible control.