This paper is a study on the imports of building materials and components in Japan. The followings are shown by analyzing both domestic statistics and Trade statistics: firstly, changes in the import quantity and rate of eighteen building materials and components from 1971 to 2016 are classified into four types. Second, the import rate of seven materials are higher than 10% nowadays. Third, the increase of the import rate has been basically caused by the globalization from the early 1990s, although the resource nationalism and the growth of Korean industry increased the import rate of same materials in 1980s.
