Abstract
There is a big problem that it is difficult to perform as in the plan at the IT-project. It is clear to lack risk management in the IT-project. This paper argues about the cause that suitable risk management is difficult in the IT-project, from the viewpoint of social science. The project is constituted by the stakeholder with confrontations of interest. The loss by the risk breaks down the balance of a stakeholder's interest. Therefore, a project-manager recognizes the difference in a stakeholder's risk sense and management style. And, He needs to take agreement of risk management style.
