Abstract: In the urban rail transit line FAO (fully automatic operation) scenario, the train-related information collected by ISCS (integrated supervisory control system) is uploaded to ground and control center mainly through PIS (passenger information system) vehicle-ground wireless network. The PIS vehicle-ground wireless network architecture and its operation and maintenance status are introduced. Considering the practical operation needs, the PIS vehicle-ground wireless network intelligent monitoring technology in FAO scenario is studied, network intelligent monitoring technical scheme is proposed, and the implementation method is designed.