Standard New Effective Temperature (SET^*, Gagge et al.,1986) is a single temperature index of human response to a thermal environment. Therefore SET^* can not individually describe each influence from thermal factors, that is, radiation, humidity, air velocity, clothing insulation and activity. In this paper, a method to individually express the thermal influences of radiation, humidity, air velocity and clothing insulation with the exception of activity in temperature scale are proposed. SET^* was indicated as the value adding temperatures capable of expressing the influences of the four thermal factors mentioned above to the air temperature of the actual environment as a basal temperature.
