The operation status of the expressway service area is investigated, the concept of zero-carbon service area is clarified, and the key technologies for realizing "zero carbon" are analyzed. From the five aspects of building low-carbon, renewable energy and energy saving and environmental protection measures, carbon emissions and environmental monitoring measures, management measures, and economy, an evaluation system for the zero-carbon service area of expressways is constructed. Fuzzy comprehensive evaluation model of expressway zero-carbon service area is developed. Finally, the Tianjin Jinnan service area is evaluated using a comprehensive evaluation model, the results show?that the service area is a B-level zero-carbon service area.