In order to provide a lighting control power supply allowing for an intuitive movement among setting input screens for each of the control setting items in a plurality of lighting instruments while reducing the number of inputs needed from a user when setting each control parameter, the constitution is such that, if an input into an input device occurs in a first direction, a display device displays a setting input screen related to a control instrument that is different from the one prior to the input, and if an input into the input device occurs in a second direction, the display device displays a setting input screen related to a control setting item that is different from the one prior to the input.