Iron and steel industry in China will continue to evolve with increasing demand of domestic market. Steel remains to be the an irreplaceable material used in almost all objects in the professional and private life, due to its excellent and wide performance and reclaimable property. In the past 20 years Chinese iron and steel industry has changed significantly. The annual production of crude steel in China has exceeded one hundred million tons. New processes were developed and a large variety of new products were also invented to satisfy the needs of economic development in China. The application of new technologies such as thin slab continuous casting ,casting ~ rolling with liquid core and low temperature rolling will have a wide applying demand in Chinese iron and steel industry, which will be more competitive and attractive for investment. A good deal attention has been paid to the development of new environment - friendly and energy - saving processes for the next generation of iron and steelmaking. Introduction of physical field, for example electric field, magnetic field, microwave field and ultrasonic field, to a chemical reaction or solidification system will give an unexpected result. Its industrial application will bring a revolutionary change in iron and steel manufacturing.