In this paper, we propose smooth risk communication support method in Multiplex Risk Communicator. In advanced information society, various information, various social risk and various complicated social problem exist. Risk communication is necessary to solve complicated social problem between stakeholder with different knowledge and different standard about risk.In this paper, we introduce portal system that assists participant, to get optimal combination of counter measures for participant. The characteristics of the proposed method are, first to classify information acquisition stage of participant, second to enable smooth change of information acquisition stage, third to support information acquisition by offering information portal.