Abstract: Underground space planning is required for sustainable and systematic development of urban underground space (UUS). With rapid development of urban rail transit system and the introduction of related policies, UUS utilization will certainly see a booming future, and UUS planning will become increasingly important. Across China, a basic technological framework for UUS planning is emerging but various issues still need to be resolved. Therefore, it is important to have a clear understanding of the current UUS planning status and recognize existing problems and solutions to ensure a sustainable urban development.

Key words: urban underground space (UUS), planning system, implementation effects, enhancement measures