The paper, focusing on the problem of cost overrun of a project, adds managerial flexibility value to project management to have project cost controlled finally with considering the actual performing of a project.

• 针对项目成本超支问题,考虑项目的实际运作,将管理弹性的价值添加到项目管理中,力求更好地估计项目成本,最终使项目成本得到控制。