The present application is disclosed an atomizing component and an electronic cigarette. The atomizing component comprises a light-permeable e-liquid storage sleeve. An atomizing core is detachably connected to an end of the e-liquid storage sleeve. A fastening element for restricting radial expansion of the e-liquid storage sleeve is sleeved at where the e-liquid storage sleeve is insertedly connected to the atomizing core. An end of a ventilation pipe opposite to the atomizing core is a smoke emitting outlet in communication with a suction nozzle. An e-liquid filler hole is extended from the end of the ventilation pipe provided with the smoke emitting outlet. The smoke emitting outlet and the e-liquid filler hole are located on planes of different heights； while e-liquid is being added, the outer circumferential wall of the ventilation pipe blocks the e-liquid splashed accidentally, thus preventing the e-liquid from being splashed into the ventilation pipe.
