Abstract
This paper attenpts to apply an online deliberative experiment to a issue of wooden biomass utilization. We have screened 34 stakeholders on the issue and provided them with expert konledge. Then we have analysed their attitude change by questionnaire data of before and after deliberation and by text mining of discourse. The results shows that i) proponents of wood biomass as general term has increased slightly after deliberation, ii) as for intermediate and demand side, ther emerged the group that would shoulder a burden morer than the present and the group that could not go along with, and for supply side, there emerged the group that are involved in if it would turn a profit iii) the effect of this experiment indicates that the most participants were able to express their opinions and collected information autonomously and then interactied each other.