These days, the shortage of final disposal site is one of the most serious problem in Japan. The waste derived from the local government is to be disposed by itself, while the waste depends on industrial activities in the other region and therefore it causes regional interdependence flow.
In this study, the structure of interdependence material input and waste is analyzed and evaluated by using Input-Output Analysis. The interrelation between internal and external demand in national 8 regions is estimated using waste intensity in each industry. As a result of the analysis, various particular in construction by-product which has largely shares in final disposal, and the relationship between material input and waste in construction activity observed.