The invention relates to an urban rail transit passenger flow guidance information release system and method and belongs to the technical field of urban rail transit guidance. The system comprises an operating terminal, an event analysis server, a template and configuration management server, an information release server, a data management server and the like. The operating terminal selects the type of events and records data into the system; basic road network and time table data in the data management server are retrieved, and the event analysis server calculates an event impact range; the information release server matches templates and basic configurations to generate release information and controls information auditing and release. The system and method has the advantages that a convenience operating platform is provided for workers to release passenger flow guidance information; the features of convenience, timeliness and diversity in the releasing of daily road network operation guidance information, operation plan adjustment guidance information and emergency event guidance information are met, the intelligence level of urban rail transit system passenger services is increased, the road network is safer and more efficient, and trip quality is improved for passengers.