An exemplary atomizing assembly includes a heating component, a holder, an electrode, and a cover. The heating component includes a liquid conducting element and a heating element in contact with the liquid conducting element. The holder includes two arms extending from a first end thereof. The two arms and the cover cooperatively define a receiving space. The heating component is received in the receiving space. The electrode is arranged in the holder and is insulated from the holder. Two ends of the heating element are connected with the holder and the electrode respectively. The holder further includes a connection part arranged at an opposite second end, and the connection part is configured for detachably engaging with an external component.