Abstract: An atomizing device includes a liquid containing module and an atomizing assembly. An inside of the liquid containing module has a fixing element and a liquid storage container. The liquid containing module has a flowing channel communicated with the fixing element. The liquid storage container surrounds a peripheral wall of the flowing channel and an outer surface of the fixing element. The fixing element has an accommodating space. A side wall of the accommodating space has at least one first liquid guiding groove. The accommodating space is equipped with a bushing. A side wall of the bushing has at least one second liquid guiding groove. The atomizing assembly is mounted under the liquid containing module. The atomizing assembly is equipped with an atomizing core module assembled in the bushing. A side wall of the atomizing core module has at least one third liquid guiding groove.