An exemplary atomizer (10) includes a main body of housing (101), a mouthpiece (102), an atomizing core (103), an atomizing cover (105). The main body of housing defines a liquid chamber (104) configured for storing tobacco liquid. The mouthpiece is detachably connected with an end of the main body of housing. The atomizing core arranged in the main body of housing. The atomizing cover is arranged in the liquid chamber. The atomizing core is arranged in the atomizing cover. The atomizing cover has a top surface (1051), and the top surface defines at least one liquid inlet (1052). The atomizing core includes a heating element (1032) and a liquid conducting element (1031) surrounding the heating element. The liquid conducting element is configured for absorbing tobacco liquid flowed from the at least one liquid inlet, and the heating element is configured for atomizing the tobacco liquid in the liquid conducting element.
