With the implementation of the national strategy of "carbon peak" and "carbon neutrality", the iron and steel industry, as a pillar industry of the national economy, is experiencing a critical period of transformation and upgrading. As an intensive part of energy consumption and carbon emission in steel production, the sintering process has the potential to energy conservation and emission reduction. The current situation and existing problems of energy consumption of sintering technology are focused on, and the significant advantages and development prospects of ultra-thick material layer sintering technology in energy conservation and emission reduction are deeply analyzed. At the same time, the boundary division of energy efficiency evaluation models is also discussed in depth, and a variety of evaluation models are introduced, including the exergy analysis model based on the principle of thermodynamics and the benchmarking analysis model based on industry standards, and the advantages and disadvantages of each model are pointed out. In addition, based on the comprehensive analysis of the existing research results and evaluation model construction methods, a new scheme to construct an extreme energy efficiency carbon reduction model of ultra-thick material layer is proposed, aiming to provide new ideas for the optimization of energy efficiency evaluation models, help realize the rational utilization of resources, and promote the development of sintering technology in the direction of green and low-carbon.