A liquid storage cylinder (10), comprising a cylindrical housing (11) used for storing a liquid to be atomized, wherein the cylindrical housing (11) is axially provided with a step-shaped through hole (12), a liquid outlet (14) communicating with the cylindrical housing (11) is provided on the inner wall of a large hole (13) of the step-shaped through hole (12), and a sealed liquid guide means (20) is fixedly provided within the large hole (13) of the step-shaped through hole (12). The sealed liquid guide means (20) comprises an outer ring (22) that seals against the inner wall of the large hole (13) of the step-shaped through hole and an inner ring (21) that seals against and rotates in limited fashion within the outer ring (22). The outer ring (22) and the inner ring (21) are provided with corresponding middle holes (24) and liquid guide holes (23) the middle holes (24) communicate with the liquid outlet (14). When the inner ring (21) rotates to a limiting position, the middle holes (24) correspondingly communicate with the liquid guide holes (23) when the inner ring (21) rotates to the other limiting position, the middle holes (24) and the liquid guide holes (23) are staggered and isolated. The inner hole of the inner ring (21) is configured to be detachably connected with an atomizing means (40) of an atomizer. The liquid storage cylinder has simple structure and good sealing performance, and the liquid storage cylinder of the atomizer can be easily and quickly used and replaced.Linvention concerne un cylindre de stockage de liquide (10) comprenant un logement cylindrique (11) utilisé pour stocker un liquide à atomiser, le logement cylindrique (11) comportant axialement un trou traversant en forme de marche (12), une sortie de liquide (14) communiquant avec le logement cylindrique (11) étant prévue sur la paroi interne dun grand trou (13) du trou traversant en forme de marche (12), et un moyen de guidage de liquide scellé (20) étant disposé de manière fixe dans
