A safe illuminating fragrant device has a base, electric circuit, case body, and an electrothermal unit. The base has a through hole, and the electric circuit is arranged in the base. The electric circuit has a plurality of lighting components capable of emitting light in predetermined color. The case body covers the base. A plurality of apertures is arranged around a peripheral of the case body with a predetermined interval. Lights from the lighting components will go into the case body and project out through the apertures. A receiving slot is formed to a top of the case body for receiving spices, and the electrothermal unit will heat up a bottom of the receiving slot. A safety and visual effect are improved by above assembly.