Abstract: Purpose/Significance Supply chain emission reduction is an important part of the world economy to deal with global climate change and achieve carbon neutrality or net-zero emissions. It is also an important strategy to meet the demand of low-carbon market and improve the sustainable competitiveness of supply chain. In the context of implementing green development strategy and “dual carbon policy” objectives, it is of great practical significance to study supply chain emission reduction decision-making. Design/Methodology This paper focuses on the existing relevant literature from three aspects of mandatory emission reduction by government policies, emission reduction by cooperation between supply chain members and emission reduction by digital technology, and summarizes the influence of external pressure (government policy regulation), internal cooperation and new technology application on supply chain emission reduction decision-making. Conclusions/Findings From the perspective of supply chain members’ independent emission reduction, digital technology empowerment and supply chain net-zero emissions, the trends of supply chain emission reduction-making decision is proposed.