An aerosol generation device comprising: a load used 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 acquire a temperature of the load, and to control the power that is supplied from the power source to the load by feedback control, based on a difference between the temperature of the load and a predetermined temperature, wherein when a drop of the temperature of the load is detected during execution of the feedback control, the control unit is configured to change a value of a variable that is used in the feedback control, so as to increase the power that is supplied from the power source to the load, wherein the control unit is configured to execute the feedback control so that the temperature of the load gradually increases, and to change the variable to a value that is different from a value before the change based on detection of the drop, when the drop is resolved, or configured to execute the feedback control so that the power that is supplied from the power source to the load gradually increases, and to change the variable to a value that is different from a value before the change based on detection of the drop, when the drop is resolved, and wherein the control unit is configured to reduce an amount in change of the variable with the progress of the feedback control, or configured to set the amount in change of the variable to zero when the feedback control progresses by a predetermined degree of progress or greater and the drop is detected, and wherein when the drop is detected, the control unit is configured to increase at least one of a gain that is used in the feedback control and an upper limit value of the power that is supplied from the power source to the load. a load used 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 acquire a temperature of the load, and to control the power that is supplied from the power source to the load by feedback control, based on a difference between the temperature of the load and a predetermined temperature, wherein when a drop of the temperature of the load is detected during execution of the feedback control, the control unit is configured to change a value of a variable that is used in the feedback control, so as to increase the power that is supplied from the power source to the load, wherein the control unit is configured to execute the feedback control so that the temperature of the load gradually increases, and to change the variable to a value that is different from a value before the change based on detection of the drop, when the drop is resolved, or configured to execute the feedback control so that the power that is supplied from the power source to the load gradually increases, and to change the variable to a value that is different from a value before the change based on detection of the drop, when the drop is resolved, and wherein the control unit is configured to reduce an amount in change of the variable with the progress of the feedback control, or configured to set the amount in change of the variable to zero when the feedback control progresses by a predetermined degree of progress or greater and the drop is detected, and wherein when the drop is detected, the control unit is configured to increase at least one of a gain that is used in the feedback control and an upper limit value of the power that is supplied from the power source to the load.