Embodiments of the present disclosure provide an atomizer including an atomizing assembly and a liquid storage tube for supplying smoke liquid to the atomizing assembly； the liquid storage tube is provided with a liquid storage cavity and a liquid outlet in communication with the liquid storage cavity； the atomizing assembly includes a base, the base is provided with an accommodating cavity and at least one atomizing cavity； the accommodating cavity is correspondingly disposed with respect to the liquid outlet, each atomizing cavity is in communication with the accommodating cavity； the atomizing assembly further includes a first liquid guiding element disposed in the accommodating cavity, and a heating element and a second liquid guiding element disposed in the atomizing cavity, wherein the first liquid guiding element is in communication with the second liquid guiding element.
