作为城市建设和国土空间资源的重要组成部分，城市地下空间开发利用在新发展阶段的地位和作用愈显突出。本文通过剖析新发展阶段的新需求和新问题，提出了城市地下空间开发利用的新发展策略。基于国土空间规划新体系，绿色、低碳、韧性新理念以及土地存量更新的新模式等新发展阶段的特征和要求，分析了城市高质量发展对地下空间开发利用的战略需求；提出了新发展阶段城市地下空间开发利用需要解决的一系列新生问题，包括国土空间资源禀赋调查评价不足、承载能力概念不清，城市地下空间的绿色低碳韧性挖潜不充分，城市地下基础设施资源配置不均衡、发展机理机制不明确等。在此基础上，从治理体系建设、资源智慧管理、规划理论方法、数据驱动范式、深层空间利用、存量空间重构、新区一体化开发及地铁域控制等8个方面阐释了新发展阶段城市地下空间开发利用的重点任务和发展建议，以期为实现城市地下空间的立法为本、规划引领、建设有序和智慧管理提供有益借鉴。

As a crucial component of urban development and territorial space resources, the urban underground space plays an increasingly important role in the new development stage. This study analyzes the new demand and challenges in the new development stage and proposes development strategies of the urban underground space accordingly. Based on the characteristics and requirements of the new development stage, this study analyzes the strategic demand for urban underground space utilization from the perspectives of territorial space planning system, green and low-carbon resilience concepts, and urban renewal modes. Subsequently, it proposes a series of new challenges to be addressed for urban underground space development in the new development stage. These challenges include the deficiency in territorial resource investigation and assessment, ambiguity in underground bearing capacity, deficiency in exploiting the low-carbon and resilient potentials of the urban underground space, and imbalance in resource allocation and ambiguity in development mechanism of the infrastructure. Furthermore, eight priority tasks and corresponding development suggestions are proposed from the aspects of legal and administrative system development, smart management of resources, planning theories and methods, data-driven paradigm, deep space utilization, spatial reconfiguration of built space, integral development of new areas, and regulation of metro-led space. This study is expected to provide insights for the legislation, planning, construction, and management of the urban underground space.