Abstract
Large-scale urban development represented by smart city, project is configured in the consortium form multiple companies and organizations from different fields to participate. In such projects, the entire management is an important point. In order to increase the flexibility in the future, there is a need to strengthen the integrated risk management that focuses on the uncertainty of the project by cooperation of companies and organizations of multiple. In this paper, we were evaluated by the case study of the smart city project of Japan, the effectiveness of the mechanism of integrated risk management in P2M that we propose.