Abstract
The software productivity is used as one of the quantitative management indices in the software development project. The software productivity is influenced from an evaluation of the productivity improvement measure and a new project according to various factors such as the development environments and member skill besides the accuracy of the scale and the man-hour that is a basic standard though it is used by it when it estimates and the plan is settled on. Therefore, when the difference of the software productivity is large in each project, and it evaluates and the actual number value is used, the point that should be noted is abundant. In this text, it reports on a concrete evaluation, the analysis, and the use case with the software productivity index in our company.