Abstract: An atomizing core and a cartridge are provided. The atomizing core includes an atomizing surface and a seepage surface opposite to the atomizing surface. The seepage surface is recessed downward to form an e-liquid slot. A heating wire is disposed on the atomizing surface. The atomizing core is made of a porous ceramic material. The atomizing core is formed with a plurality of capillary hole structures from the seepage surface to the atomizing surface after the atomizing core is fired. A part of the e-liquid slot protrudes upward to form a protruding column, and an inclined surface is disposed on a peripheral wall of the protruding column facing the e-liquid slot. The present disclosure effectively avoids a problem that the seepage of the e-liquid is insufficient in a case that the e-liquid is in a small amount.

Abstract: A closure body includes a closure member and a sealing member formed on closure member. The closure member includes a closure end, an accommodation end extending downward from closure end, an e-liquid passage running through closure end and extending to accommodation end, and an air passage separated from e-liquid passage. The air passage includes a connection air passage running through top of closure end, a longitudinal air passage longitudinally running through closure end and communicating with connection air passage, and an outer-side air passage extending from outer edge of longitudinal air passage to accommodation end. A notch is formed in middle of accommodation end. The sealing member includes a first sealing portion—formed at accommodation end, a second sealing portion extending from first sealing portion toward closure end, and a third sealing portion formed at periphery of top of closure end and integrated with second sealing portion.