This aerosol generator comprises: a power supply； a load which has a resistance value that changes with temperature, and which is for generating an aerosol by atomizing an aerosol source or heating a flavor source with electric power fed from the power supply； a sensor which is equipped with a resistor connected in series to the load, and which outputs a measurement value, being either the value of an electric current flowing through the resistor or the value of a voltage applied to the resistor； and a control unit which controls the power fed to the load from the power supply, and which is for receiving the output of the sensor, wherein the resistor is configured to have a resistance value that causes the responsiveness regarding a change in the measurement value with respect to a change in the resistance value due to temperature, to fall within a predetermined range.
