The profit structure of Japanese iron and steel industry ought to be sustainable, not temporary one.The industry should not expect the demand exceeded the supply of steel, nor depend on specialprocurements, but it is necessary to accelerate thoroughness of rationalization of the industry itself andstructural reform.Amid ongoing globalization of the markets, both in production and consumption, competitions in theindustry extends not only domestic but also all over the world. In this regard, the importance and thevalidity of "reorganization" are shared concerns among the industry.This paper examines about the measures for "reorganization" of Japanese iron and steel industry.