The present invention relates to a portable atomizer having a touch switch, comprising: a housing; a nozzle provided at a side of the housing; an atomizing sheet provided within the housing at the side having the nozzle; a liquid drug tank provided at a side of the atomizing sheet; and a circuit board connected to the atomizing sheet, and a battery connected to the circuit board that are disposed within the housing. The circuit board comprises a main control unit, an atomization drive unit, and a step-up unit connected in sequence. The step-up unit is connected to the battery, and the atomizing sheet is connected to the atomization drive unit. At least part of the housing is made by using an insulating material. The atomizer further comprises a touch sensing member and a capacitive touch IC. The touch sensing member is pressed against an inner side of an insulating housing. An input terminal of the capacitive touch IC is connected to the touch sensing member, and an output terminal of the capacitive touch IC is connected to a push-button detection interface of the main control unit. The present invention enables a user to simplify the machine body structure of an atomizer. The atomizer is characterized in that the device is lightweight and has a small volume, and that the switch has a long service life.La présente invention concerne un atomiseur portable ayant un commutateur tactile, comprenant : un boîtier; une buse disposée sur un côté du boîtier; une feuille d'atomisation disposée à l'intérieur du boîtier sur le côté ayant la buse; un réservoir de médicament liquide disposé sur un côté de la feuille d'atomisation; et une carte de circuit imprimé connectée à la feuille d'atomisation, et une batterie connectée à la carte de circuit imprimé qui sont disposées à l'intérieur du boîtier. La carte de circuit imprimé comprend une unité de commande principale, une unité d'entraînement d'atomisation et une unité d'élévation de tension connectée en séquence. L'unité d'éléva