An atomizer is disclosed including a heating element, being configured for heating and atomizing tobacco liquid to generate an aerosol a tobacco liquid reservoir, being configured for storing the tobacco liquid and a liquid drive component, being connected with the tobacco liquid reservoir directly or indirectly, and being configured for controlling a volume of tobacco liquid conveyed to the heating element, with the tobacco liquid reservoir set on the atomizer, to control the volume of tobacco liquid in the tobacco liquid reservoir conveyed to the heating element so as to convey measurable tobacco liquid as well as generate measurable aerosol.
