Abstract: At present, the drawing of railway construction organization plane graph is mainly manual, which has some problems such as long drawing cycle, low precision and heavy workload. For this, this paper puts forward a method for automatically generating railway construction organization plane graph by using a domestic CAD control and the GDAL open source software library. Firstly, the scope of the railway construction organization plane graph is derived from railway line data. Then, all the map tiles and vector data within the scope of the plane graph are properly processed by using the GDAL. Finally, all the data of plane graph are drawed by using the CAD control. Based on this method, the design software is developed and a railway project is taken as an example to analyze the time-consumtion for generating the construction organization plane graphs for the railway within different mileage and at different map levels. The results show that this method has high efficiency in drawing and is convenient for drawing the construction organization plane graphs required at different design stages of a railway engineering project, thus greatly reducing the workload of the designers.