A disc guide device for guiding and placing a disc cartridge and a bare disc in a predetermined position on a tray of a disc player. When a bare disc is loaded on the tray, a guide portion is projected through and above a guide hole by the elastic force of a spring to contact the circumference of the disc. When a disc cartridge is loaded on the tray, a protrusion is inserted into a reference hole, and the guide portion is pressed down by the disc cartridge and buried below the guide hole. Since the device guiding the disc cartridge and the device guiding the bare disc are integrated in the disc guide device, it is possible to fabricate the disc guide device with fewer parts, lower material cost, and with a simpler structure.