An object of the present invention is to provide a CO 2 recovery apparatus capable of recovering CO 2 by using only a low-quality exhaust heat at 100°C or less. The present invention comprises an absorption tower for allowing a basic aqueous solution to absorb CO 2 ; and a regenerator for heating a basic aqueous solution with CO 2 absorbed therein using a heating medium having a temperature of 100°C or less, thereby desorbing CO 2 .