An electronic warning device with scent dispersion mechanism is disclosed, which comprises: an electronic element; and at least two scent sources, featured with different vaporization temperatures while being disposed simultaneously on the electronic element. In an embodiment, there are two scent sources, i.e. a first scent source that can be vaporized at a first vaporization temperature, and a second scent source that can be vaporized at a second vaporization temperature, whereas the second vaporization temperature is higher than the first vaporization temperature. Thereby, operationally, when the temperature of the electronic element that is operating normally and reaches the first vaporization temperature, the first scent source is vaporized, but when the electronic element is operating abnormally for causing the temperature of the electronic element to be raised to a temperature higher than the second vaporization temperature, the second scent source is vaporized to be detected by users as a warning signal.