An aerosol generating device includes: a case； a container mounted inside the case to be movable in a longitudinal direction of the case and having an accommodating space configured to accommodate a cigarette； a heater disposed inside the case such that a front end thereof is inserted into the accommodating space of the container, the heater being configured to heat the cigarette when electricity is applied thereto； and an elastic support portion configured to elastically support the container with respect to the case.
