Many local cities are groping for plans to activate themselves. One effective way is to carry out large-scale projects in the cities, and then by impact of the projects is to achieve the change of their economic structure and the extension of their economic scale. Accordingly, Some tools for quantitatively assessing effectiveness of the projects are needed to make successful plans.
In this paper, we describe an impact metric model of large-scale projects to meet such needs. The model consists of a regional econometric model, a regional input-output model, and population model. The feature of the model is to be able to measure not only impact of direct investment of the projects but also one of working the projects. Moreover, a simple method is proposed to mesure impact of consumption cycle (production-income-consumption-production) of the projects. Finally, we apply the model to Kitakyushu city and then present some simulation results.