Traffic signs plays an important role in pedestrian path guidance in the urban rail transit hub. However, the existing traffic signs within urban rail transit hubs are more or less deployed rigidly, which cannot fully consider the relationship between the layout and visual information about passengers’ decisions. Therefore, this paper analyses the influence of traffic signs on the path selection behavior of pedestrians, and construct the MAKLINK diagram to study the impact of traffic signs on pedestrians’ proceeding decisions by a simulation technique. With the MAKLINK diagram, the path plan under the guidance of traffic signs is formulated. Then, the optimal pedestrian path on the MAKLINK diagram considering the effect of traffic signs is optimized via the Ant Colony Algorithm. An empirical study at Beijing South Railway Station is conducted. The findings reflect that traffic signs within urban rail transit hub could effectively take effect to the path selection behavior of large-volume passengers.