A heating device for heating an aroma material in a removable aroma material container, the heating device includes a receiving unit, a removable aroma material container, and an air ventilation film covering an opening of the container. A sealing cover covers the air ventilation film and the opening to seal the aroma in the container. A user is allowed to lift the sealing cover and to place the container in the receiving unit, and the aroma is heated by the heating device to disperse scent. If the heating device and the container are toppled by chance, the melted aroma is blocked by the air ventilation film from flowing to a region outside of the heating device. The container is disposable or recyclable as the aroma burns out. An LED in the heating device emits light penetrating the receiving unit. The heating device is safe and good-to-see.
