An atomizing assembly (160), comprising:a liquid absorption element (164) made of porous ceramic, and the liquid absorption element (164) having a liquid absorption surface (1642) configured to absorb the liquid, and an atomizing surface (1652)； anda heating element (166) embedded in an interior of the liquid absorption element (164), wherein the heating element (166) is configured to atomize the liquid absorbed by the liquid absorption element (164) into atomized gas；characterized in thatan edge of the heating element (166) is internally tangent to the atomizing surface (1652).
