The iron and steel industry plays an important role in Chinese economic development. It is a pillar industry of our country, but also an industry with high energy and water consumption, high pollution, and high carbon emissions. Under the new situation that China has formulated the carbon peaking and carbon neutrality goal, the end treatment of wastewater pollution in the iron and steel industry is still disconnected from the production process, and the efficiency of water and energy usage still needs to be improved. It is difficult to meet the control needs of low-carbon development of the industry, so it is urgent to promote the overall planning of pollution control and carbon emission reduction. This work puts forward the research ideas for the development of water-saving and pollution-reduction technology in the iron and steel industry under this background, which concludes the comprehensive planning of water supply, water use, wastewater treatment, and water recycling, low-carbon collaborative control of water pollution across different mediums, the whole process control and intelligent optimization of wastewater pollution, the common prosperity and collaborative development of steel enterprises and local cities. It is expected to further enhance the scientific and technological support for water conservation and pollution reduction in the iron and steel industry in the future, and help the green and low-carbon development of the industry.