Abstract:With the development of urban economy, more and more cities are starting to build underground roads as a measure to optimize the traffic organization in the urban CBD. However, the complexity of underground roads poses new requirements for underground navigation. Through the demand analysis of the underground navigation system for urban underground roads and in combination with the application of the indoor Beidou system in the intelligent management and control platform project of Qianhai underground roads, through a full-process tracking study, including pre-research, process implementation and effect testing, the underground navigation system of the intelligent management and control platform project of Qianhai underground roads is comprehensively studied and analyzed, which has the reference value for solving the navigation problems of urban underground roads in China.