Abstract: Aiming at the problems such as low efficiency of manual drawing and statistical quantities, inconsistent standards, and error-prone in the current design process of railway station building information system working drawings, this paper developed a set of working drawing aided design software of railway station building information system based on AutoCAD. The software framework was divided into three modules: parameter setting, data processing and result generation. In the parameter setting module, the paper designed a list of standardized information system equipment terminals, a general diagram block and a general description template to implement the batch import of standardized data of each information subsystem. In the data processing module, the paper built the data structure model of each information subsystem to implement the digitalization of the information system model. In the result generation module, through traversing the nodes of the multi-tree data model of the information system and analyzing and calculating the data in the nodes, the paper implemented the automation of the information system working drawing, engineering quantity statistics, and selection of some equipment and cables. The application of this software will help to improve the drawing efficiency and design quality of the working drawings of the railway station building information system.