In response to the increasing importance of underground space operations in future urban warfare， to address the current issues of insufficient research on underground space operations and unclear capability requirements， a grey quality function deployment （GQFD） method based on grey correlation analysis is adopted. After fully studying and analyzing the concept of urban underground seizure and control operations and the basic “task-capability” requirements， a grey correlation analysis and a house of quality demand model are established. Through analysis and calculation， the key capability requirement indicators and their importance ranking for urban underground seizure and control operations are obtained， providing a certain basis for the research on urban underground warfare and the demonstration and construction of equipment requirements.