In the context of the“dual carbon”strategic goal， iron and steel enterprises with high energy consumption and high emissions urgently need to achieve green and low-carbon transformation through technological innovation. The energy consumption of the iron and steel industry accounts for more than 15% of the total energy consumption of the national industry， and the energy consumption of the pre-iron ( sintering， ironmaking) process accounts for about 60%～70% of the total energy consumption of the iron and steel industry，of which the sintering process accounts for 15%～20% of the carbon emissions of the steel industry. Therefore，the sintering process is an important link in energy conservation and carbon reduction. In this paper， the sintering process is optimized by micro-negative pressure ignition zone control，oxygenrich ignition，mixture steam heating，mixture moisture control and other technologies to optimize the thick layer sintering process， and carry out technological innovation and application integration such as sintering waste heat recovery， flue gas internal circulation and intelligent control， and develop a series of energy conservation and carbon reduction technologies to improve the air permeability of the material layer and reduce the air leakage rate， and increase the thickness of the sintering bed to 900 mm. The results show that the unit consumption of blast furnace gas in the sintering process decreases to 37. 44 m³/t， the solid fuel consumption decreases to 49. 03 kg /t，and the unit power consumption decreases to 19. 68 kW·h /t. Correspondingly，the energy consumption of the sintering process ( discounted coal ) decreases to 51. 72 kg /t，which is 4. 42% lower than before. While the energy consumption of the sintering process is reduced， its carbon emission intensity is reduced by 4. 41%. The optimization of thick layer sintering process and the development of energy-saving and carbon reduction technical measures can help enterprises achieve significant comprehensive economic benefits，and provide reference for energy conservation and carbon reduction work and green transformation and development of the steel industry.