本文认为21世纪的钢铁工业的技术发展趋向为钢铁工业新流程的开发与钢铁传统工艺完善化的竞争。21世纪将是钢铁工业重组的世纪。 This paper considers that the technological development trend of the iron and steel industry in the 21st century is a competition between the development of the new iron and steel industry process and the improvement of the traditional steel process. The 21st century will be the century in which the iron and steel industry restructured.