Abstract
Recent acceleration of business speed severely requires the short-delivery time development in software projects. Since early 1990s, as a solution of such subject, some agile methodologies are proposed, but these do not always show the remarkable improvement in software development. In such situations, the CCPM is getting a focus of attention as an application of the theory of constraints to project management. In this paper, an application of CCPM is proposed for improvement of software project. The effectiveness of the model is verified by analyzing the scheduling and application results of the project cases which realized a short-time development by applying this model.