Abstract
In this study, we examined an ideal method of disaster prevention education about sediment disaster, and carried out the meeting to organize the voluntary evacuation system by residents. Then, we measured the attitude and behavior change of the residents who attended to the meeting. On the other hand, we grasped the actual situation of influence for neighboring residents who did not attended to the meeting by having carried out it, for the purpose of letting an effect of a social experiment for one such district spread to the other area effectively.