在韧性城市、海绵城市与城市更新的背景下，城市地下基础设施作为城市建设的重要部分，其低碳、安全、协调发展对推动城市高质量发展，助力我国“双碳”目标实现具有重要作用。本文通过总结城市地下基础设施低碳发展的现状及存在的问题，提出了新建和既有城市地下基础设施低碳发展的实施路径与策略。研究认为，对于新建城市地下基础设施，以源头端、消费端、固碳端三端为抓手，提出了在规划设计、建造物化、运行维护阶段等全面考虑城市地下基础设施全生命周期的低碳发展策略；对于既有城市地下基础设施，提出了电气化、智能化和实用化的绿色改造策略以及新老交汇、和而不同的绿色扩建策略。为进一步推动我国城市地下基础设施低碳发展，从摸清城市地下基础设施温室气体排放家底、完善城市地下基础设施低碳发展顶层设计、加强城市地下基础设施低碳发展技术研发、加强城市地下基础设施低碳发展政策倾斜4个方面提出了对策建议。

The urban underground infrastructure is a vital part of urban construction. In the context of resilient city, sponge city, and urban renewal, the low-carbon, safe, and coordinated development of urban underground infrastructure is crucial for promoting the high-quality development of cities and helping China achieve its carbon reduction goals. This study summarizes the development status and problems of low-carbon development of urban underground infrastructure and proposes carbon development paths and strategies for new and existing urban underground infrastructures. For new urban underground infrastructure, a low-carbon development strategy that considers the whole lifecycle of the infrastructure is proposed from the perspective of the source, consumer, and carbon fixation sides. For existing urban underground infrastructure, a green transformation strategy that features electrification, intelligence, and practicality is proposed alongside with a green expansion principle of harmony in diversity. To further promote the low-carbon development of China's urban underground infrastructure, the following measures are suggested: figuring out the greenhouse gas emission status, improving the top-level design, strengthening the research and development of low-carbon technologies, and promoting policy incentives.