An aerosol generating system is provided. The aerosol generating system includes an aerosol generating device and a charger, wherein the aerosol generating device includes: a first communication interface; a battery; and a first controller configured to: perform control to charge the battery based on wirelessly receiving a power signal from the charger through the first communication interface; determine a state of the aerosol generating device comprising a locked state or an unlocked state and generate a status signal corresponding to the state of the aerosol generating device; transmit, based on initiation of charging of the battery, the status signal to the charger through the first communication interface; and change the aerosol generating device to the unlocked state based on receiving an unlock signal from the charger through the first communication interface.