An aerosol generating apparatus provided with a movable heater includes a heater that has an end portion into which a cigarette is inserted and heats the cigarette by operating by means of an electrical signal； a support portion supporting the heater to be movable within a pre-determined range in a longitudinal direction of the cigarette； and a rotating member rotatably coupled to the support portion, and rotating and transmitting a driving force to the heater to move the heater in the longitudinal direction of the cigarette.
