Abstract: A pure essential oil atomization device includes a bottle body, a housing, a guide cotton, and an ultrasonic atomization sheet, where the bottle body is provided therein with a pure essential oil chamber, and is provided with an opening communicated with the pure essential oil chamber; the housing is detachably connected to the bottle body, and covers the opening; the housing is provided therein with an atomizing chamber, and is provided with an atomization outlet communicated with the atomizing chamber; the ultrasonic atomization sheet is provided in the atomizing chamber, and includes an atomizing plane; and the guide cotton includes one end attached to the atomizing plane and surrounding a center of the atomizing plane, and the other end extending through the housing to the pure essential oil chamber. The present disclosure effectively solves the problems of leakage and noise in the prior art.