Abstract: Three dimensional(3D) visual simulation of train operation can show the appearance and interior of the new train to the user in the design phase, provide the basis for the route planning, the train operation dispatching and so on. On the basis of analyzing the train operation visual simulation schemes, it was established 3D visual model of terrain, track, building and vehicle. To improve the dynamic simulation efficiency and rendering speed, the hybrid modeling method based on graphics and image was adopted, level of detail(LOD) and texture mapping technique were used to implement the 3D dynamic visual simulation of train operation, achieve the visual effect with high fidelity.