An aerosol generation device comprising: a load configured to heat an aerosol generation article by using power that is supplied from a power source, the aerosol generation article comprising an aerosol-forming substrate configured to hold or carry at least one of an aerosol source and a flavor source; and a control unit configured to control the power that is supplied from the power source to the load, wherein in a case of a use phase where a temperature of the load is equal to or higher than a value at which a predetermined amount or more of aerosols is capable of being generated from the aerosol generation article, the control unit is configured to acquire the temperature of the load and a degree of progress of the use phase, to execute feedback control so that the temperature of the load converges to a predetermined temperature, wherein the control unit includes: a gain unit configured to obtain, based on a difference between the temperature of the load and a predetermined temperature, a duty ratio at which the difference is removed or reduced, and a limiter unit configured to apply a limiter processing to the obtained duty ratio in which the obtained duty ratio is set to a maximum value of a limiter width when the obtained duty ratio exceeds the maximum value and the obtained duty ratio is set to a minimum value of the limiter width when the obtained duty ratio falls below the minimum value, wherein the control unit is configured to control the power supplied from the power source to the load, based on the limited duty ratio, and wherein the control unit is configured to keep the predetermined temperature constant, and to increase a gain that is a correlation between the duty ratio and the difference between the temperature of the load and the predetermined temperature or to increase an upper limit value of the power that is supplied from the power source to the load by increasing the maximum value of the limiter width, as the degree of progress progresses, in the feedback control. a load configured to heat an aerosol generation article by using power that is supplied from a power source, the aerosol generation article comprising an aerosol-forming substrate configured to hold or carry at least one of an aerosol source and a flavor source; and a control unit configured to control the power that is supplied from the power source to the load, wherein in a case of a use phase where a temperature of the load is equal to or higher than a value at which a predetermined amount or more of aerosols is capable of being generated from the aerosol generation article, the control unit is configured to acquire the temperature of the load and a degree of progress of the use phase, to execute feedback control so that the temperature of the load converges to a predetermined temperature, wherein the control unit includes: a gain unit configured to obtain, based on a difference between the temperature of the load and a predetermined temperature, a duty ratio at which the difference is removed or reduced, and a limiter unit configured to apply a limiter processing to the obtained duty ratio in which the obtained duty ratio is set to a maximum value of a limiter width when the obtained duty ratio exceeds the maximum value and the obtained duty ratio is set to a minimum value of the limiter width when the obtained duty ratio falls below the minimum value, wherein the control unit is configured to control the power supplied from the power source to the load, based on the limited duty ratio, and wherein the control unit is configured to keep the predetermined temperature constant, and to increase a gain that is a correlation between the duty ratio and the difference between the temperature of the load and the predetermined temperature or to increase an upper limit value of the power that is supplied from the power source to the load by increasing the maximum value of the limiter width, as the degree of progress progresses, in the feedback control. a gain unit configured to obtain, based on a difference between the temperature of the load and a predetermined temperature, a duty ratio at which the difference is removed or reduced, and a limiter unit configured to apply a limiter processing to the obtained duty ratio in which the obtained duty ratio is set to a maximum value of a limiter width when the obtained duty ratio exceeds the maximum value and the obtained duty ratio is set to a minimum value of the limiter width when the obtained duty ratio falls below the minimum value, wherein the control unit is configured to control the power supplied from the power source to the load, based on the limited duty ratio, and wherein the control unit is configured to keep the predetermined temperature constant, and to increase a gain that is a correlation between the duty ratio and the difference between the temperature of the load and the predetermined temperature or to increase an upper limit value of the power that is supplied from the power source to the load by increasing the maximum value of the limiter width, as the degree of progress progresses, in the feedback control.