Abstract: In this study, the evolution of Shenzhen′s underground space development is divided into four phases: initial, exploratory, rapid development, and highquality development, in alignment with the city′s rail transit construction and its associated developmental attributes. The principal accomplishments of Shenzhen′s underground space construction are highlighted: it boasts the largest construction scale in China, considerably enhances urban carrying capacity, and has established numerous exemplary projects. Furthermore, the experience gained from Shenzhen′s underground space development is summarized as follows: (1) the implementation of special regulations to standardize construction and management, (2) the adoption of policy innovations to foster integrated development of subsurface and surface areas, and (3) the employment of multilevel planning to ensure a rational spatial layout. The urban development mission in the new era, the context of limited land resources, and ongoing rail infrastructure expansion are identified as opportunities for the future development of Shenzhen′s underground space. Furthermore, challenges such as intense spatial competition, the need for enhanced intelligent management, the necessity for improved space quality, and various construction and operational risks are acknowledged. It is concluded that the future focus for Shenzhen′s underground space should include more optimized space utilization, a more comprehensive policy framework, advanced intelligent construction management, more reliable risk prevention strategies, and enhanced exploration of pioneering technologies.

Key words: Shenzhen underground space, underground space planning, underground space management