An atomizing structural member includes an atomizing core assembly and a heating element; the atomizing core assembly includes an atomizing portion and a liquid guiding portion, the heating element is embedded in the atomizing portion, and the atomizing portion is an article of porous material; the liquid guiding portion is arranged to be in contact with the atomizing portion, and the liquid guiding portion is used to deliver an atomizing medium to the atomizing portion; the atomizing portion has an inner wall and an outer wall, the inner wall forms a first atomizing face and a first air channel that delivers aerosol generated from the first atomizing face, the outer wall forms a second atomizing face, and the liquid guiding portion is provided with at least one opening to form a second air channel that delivers the aerosol generated from the second atomizing face.