Abstract: Railway engineering pre-station design is a multi-professional collaborative design covering surveying and mapping, geology, subgrade, alignment, station, track, bridge and tunnel. However, the existing BIM standards for railway engineering have not yet defined the information delivery process and content between the various disciplines in the design stage. Therefore, taking the interaction information of various majors for railway engineering pre-station design as the research object, the paper uses the BPMN method to define the information delivery process, exchange scenario and exchange requirements of each discipline for railway engineering pre-station design. The information interaction content with the rest of the majors from the perspective of the alignment design engineer is given in the paper, which is of great significance for improving the level of collaborative design of railway engineering and promotes the standardization of information delivery among railway engineering design majors.