According to an embodiment, there is provided an aerosol generating apparatus including a case into which a cigarette including an electromagnetic inductor is insertable, a heating unit configured to heat the cigarette, a detector that includes a coil and measures a current characteristic value of a current flowing through the coil according to predetermined time information, and a controller that controls operation of the heating unit by comparing the current characteristic value measured by the detector with a predetermined reference current characteristic value, wherein the reference current characteristic value is set based on at least one current characteristic value measured by the detector.