Abstract: In response to the increasingly serious global warming problem, the Chinese government has put forward the "carbon emission peak and carbon neutrality" goals. The greenhouse gas emitted from the production activities of traffic tunnels is one of the main sources of carbon emissions in the field of civil engineering. The efficiency of energy conservation and emission reduction is the key to achieving the "carbon emission peak and carbon neutrality"goals in time and with good quality. The current research status of carbon emission calculation and analysis of traffic tunnels is summarized through statistical research on relevant documents in the past 10 years. The results show that the carbon emission research of tunnel life cycle at present is often carried out based on life cycle evaluation at home and abroad, and the emission coefficient method is selected for calculation. Most documents mainly focus on the calculation and emission reduction analysis of carbon emissions during the construction of highway tunnels and shield tunnels, and generally the carbon emissions during the construction of tunnels are divided into three phases: material production, material transportation and on-site construction. A comprehensive description of the research progress on the influencing factors and prediction formulas of carbon emissions from tunnel construction can provide a reference for future research.