Abstract: A mouthpiece assembly comprising an outer mouthpiece portion having an outlet portion and a plurality of inlet portions, and an inner mouthpiece portion removably engaged the outer mouthpiece portion, the inner mouthpiece portion comprises an exhaust portion having one end in communication with a body of an atomization device and another end aligned with the outlet portion, wherein the exhaust portion and the outlet portion define an exhaust passage, and a plurality of intake portions, each inlet portion of the plurality of inlet portions is aligned with each intake portion of the plurality of intake portions to form a plurality of air inlet channels, wherein each air inlet channel of the plurality of air inlet channels includes a proximal end open to an external environment and a distal end in communication with the body of the atomization device.

Abstract: A three-dimensional heating atomization device includes a shell, a heating element, a first thermo-electrode lead and a second thermo-electrode lead, wherein a heating chamber is arranged in the shell, one end of the first thermo-electrode lead is connected with one end of the heating element, and one end of the second thermo-electrode lead is connected with the other end of the heating element, so that a bottom surface and a side surface of the heating chamber are both heated by one heating member, and three-dimensional heating is more uniform and efficient, thus being beneficial for improving an atomization effect.