Abstract: Coal-fired power plants are a significant source of air pollutants and greenhouse gas emissions in China. Under the new target situation of coordinated emission reduction of pollution and carbon emissions, how to achieve synergistic benefits is a critical point for coal-fired power plants to achieve high-quality development. Carrying out research on the evaluation of collaborative emission reductions of pollution and carbon emissions from coal-fired power plants helps understand the current status and provide path analysis support for improving the level of synergic emission reductions of pollution and carbon emissions from coal-fired power plants. The study proposes a comprehensive evaluation method for collaborative emission reduction of coal-fired power plant pollution and carbon emissions that combines qualitative and quantitative methods. The evaluation index system involves six aspects: development level improvement, energy low-carbon transformation, resource recycling, efficient pollution control, social emission reduction services, and management level, with a total of 23 secondary indicators. Taking a coastal coal-fired power plant as an example, the Index of coal-fired power plant in synergistically reducing pollution and carbon emissions (ICSP) in 2018, 2020 and 2022 was evaluated. The results showed that the ICSP of the case power plant in 2022 has improved from less than 50 points to more than 80 points in 2018, an increase of more than 70%. The coordinated emission reduction of major air pollutants and carbon dioxide has been realized. However, efforts still need to be made in the low-carbon energy transformation, optimization of pollution control facilities, and social emission reduction services. In particular, there is much room for further optimization of energy consumption in desulfurization and denitrification facilities. The comprehensive evaluation system for synergistically pollution reduction and carbon emissions established in this article has certain practicability and can fully reflect the potential of coal-fired power plants in reducing pollution and carbon emissions.