The purpose of this study is to make it possible to predict the probability distribution of occupants' dissatisfaction with the indoor thermal environment as one of the information for the building management. The distribution of the PMV in the room shoud be taken into account for the prediction. For this purpose, the individual differences in PMV preferred and that of the relation between the PMV and the probability to vote the dissatisfaction is expressed as the individual difference model. Using this model, the expression of the probability distribution of occupants' dissatisfaction is introduced.
