Abstract
In the public meeting for infrastructure project, it becomes common to make concensus among people with interest. The managers of the meeting should encourage the participants to state their opinions; what they expect to the project. Particularly in Japan, where people are not often willing to state it, the public meeting may fail to find out their real opinions. This study develops the model how people state their opinions in the public meeting. To describe the situation, evolutionary game is used. By using this model, what measure should be taken to encourage people to state their real opinions is disccused.