Abstract: The capacity checking of passenger stations is the basis for the technical management of passenger stations.Combined with the function and characteristics of large-scale passenger station technology and equipment, a new acquisition method of raw data for large-scale passenger station capacity checking was proposed. The MicroSoft SQL Server database and PowerBuilder Enterprise 9 were used to develop and apply the capacity checking information system for large-scale passenger stations, so as to implement the automation and informatization of the capacity checking of large passenger stations.