An aerosol generation device includes: a load configured to heat an aerosol generation article by using power that is supplied from a power source, the aerosol generation article comprising an aerosol-forming substrate configured to hold or carry at least one of an aerosol source and a flavor source; and a control unit configured to acquire a temperature of the load and to control the power that is supplied from the power source to the load by feedback control. The control unit is configured to determine the power that is supplied from the power source to the load, based on comparison between an operation value obtained in the feedback control and a predetermined value.