Disclosed is an aromatic oil volatilization device mounted on the top of the mist discharge pipe of a humidifier, wherein the device comprises a base shell (1), a cotton bar (2), a rotating fairing (4) and a head cover (5). The head cover (5) is a hollow cavity with both upper and lower ends open, and the rotating fairing (4) is fixed in the head cover (5). The cotton bar (2) is located in the base shell (1), the head cover (5) is snapped on the base shell (1), a side wall of the base shell (1) is provided with an opening and the bottom of the base shell (1) is provided with a liquid-accommodating cavity (12), wherein one end of the cotton bar (2) is fixed in the liquid-accommodating cavity (12) and the other end extends out of the liquid-accommodating cavity (12). The bottom of the rotating fairing (4) is provided with an air inlet (44) and the top is provided with an air outlet (45), wherein more than two rotating gas flow-forming guide vanes (43) are distributed at intervals on the top circumferentially. The more than two guide vanes (43) form a round hole at the centre of the rotating fairing (4), and the gap between two adjacent guide vanes (43) and the round hole form the air outlet (45). The aromatic oil volatilization device enables volatilized aromatic oils to be evenly spread into the air spirally.Linvention concerne un dispositif de volatilisation dhuile aromatique monté sur la partie supérieure du tuyau dévacuation de brume dun humidificateur, le dispositif comprenant une coque de base (1), une barre de coton (2), un raccord rotatif (4) et un couvercle de tête (5). Le couvercle de tête (5) est une cavité creuse ayant deux extrémités supérieure et inférieure ouvertes, et le raccord rotatif (4) est fixé dans le couvercle de tête (5). La barre de coton (2) est située dans la coque de base (1), le couvercle de tête (5) est encliqueté sur la coque de base (1), une paroi latérale de la coque de base (1) comprend une ouverture, et le fond de la coque de base (1
