An aroma diffuser having a base, and an essential oil container cylinder above the base and sleeved by an outer shell； a circuit board and an atomizing transducer are provided inside the base； an energy accumulation aperture is provided at a bottom plate of the essential oil container cylinder； the atomizing transducer is mounted at a lower end of the energy accumulation aperture； a width of the atomizing transducer is greater than a width of the energy accumulation aperture； a light column is provided inside the essential oil container cylinder； a light source is mounted inside the light column； an upper cover is provided at an upper end of the essential oil container cylinder； a light blocking shade is provided at an upper end of the upper cover； a first opening is provided on the upper cover； a gas discharge opening is provided on the light blocking shade.
