A power supply unit for an aerosol inhaler includes: a power supply able todischarge powerto a load for generating an aerosol from an aerosol generation source； atemperature measuring unitconfigured to measure temperature of the power supply； and a control deviceconfigured to control firstpower or a first amount of power to be supplied to the power supply in a casewhere a measurementvalue of the temperature measuring unit is equal to or higher than a firstthreshold, to a value smallerthan second power or a second amount of power to be supplied to the powersupply in a case where themeasurement value is lower than the first threshold.
