An illumination display switching device includes a board, a push button-type switch mounted on the board, a light source mounted on the board, and a switch knob that is supported to a frame member to be slidable in an operation direction of the push button-type switch. The switch knob includes a display design part that is molded with a light-transmitting resin, a non-display design part except for the display design part that is molded with an opaque resin and a light guide member that is integrally molded with the light-transmitting resin of the display design part. The light guide member includes a base part and an arm part, and the base part is integrally molded with the display design part and the arm part extends from the base part and is connected to a switch part of the push button-type switch.