Abstract: The basic diagram for railway station technical operation was drawn by using the drawing method of artificial simulation. Under the premise of meeting the requirements of maximum of all day locomotive efficiency, as well as train arrival and departure technical operation time constraint and track occupancy constraint, the drawing system linked trains and locomotives. According to the idle condition of locomotives, the basic diagram was adjusted further to meet the needs of railway station operation. The use of drawing system could make efficient use of railway station resources, reduced the labor intensity of drawing diagram. Nanchang Railway Station and Kunming East Marshalling Yard were taken as examples to implement the automatic generation of basic diagram for railway station technical operation in passenger station and large marshalling yard. The feasibility of this method in engineering application was proved.