Abstract
Project consists of human, and its success factor depends on the project's member and especially project manager (PM). As for the progress of project's organization, at first PM will share the common operational picture in order to establish a scheme of visualization, secondly PM will promote collaboration by team building, and then PM will orient the entire organizational optimization utilizing self synchronization. Measures of risk assessment and PM training have implemented to prevent project failures, but issues have not decreased now. According to utilize lessons from project failures, measures about strict control, report and training are not thoroughly/fully effective. In this paper, evaluation about PM's style and the measure's effectiveness is considered. At a failed project, the PM style wasn't appropriate to situation of the project. The PM style should be optimized with situation of the project, culture of the organization or team. Utilizing lessons efficiently needs to control project appropriately, share specific and useful knowledge, and then attract PM's (trainee's) interest and to think over the root cause.
