Provided is an aerosol generating apparatus including: a main body into which a cigarette is inserted; a first electrically conductive pattern provided on a portion of the main body to function as one of a heater for heating the cigarette and a temperature sensor for sensing a temperature of the cigarette; a second electrically conductive pattern provided on another portion of the main body to function as one of the heater and the temperature sensor; and a controller controlling the first electrically conductive pattern and the second electrically conductive pattern to make the first electrically conductive pattern and the second electrically conductive pattern function as one of the heater and the temperature sensor.