Abstract: To evaluate the capacity utilization of railway hub, the railway hub is divided into several subsystems including passenger transport subsystem, freight transport subsystem, train operation subsystem and marshaling subsystem according to the characteristics of transportation organization of railway hub. A three-level index system including hub subsystems, constituent elements and evaluation indexes is constructed. Furthermore, the index measure function is constructed according to the moderate characteristic of each index item, the setting method of hierarchical weights for subsystems, constituent elements and evaluation indexes is designed, and the evaluation method of railway hub capacity utilization is established. On the basis of this, the software of railway hub capacity utilization evaluation is also developed and a case study on Zhengzhou railway hub is also presented. The results show that the subsystems of the railway hub have a great difference in their capability and the bottlenecks of marshaling yards have been significant constraints on the hub's capacity. The proposed method can provide decision support for transportation organization and general layout design of a railway hub by comprehensively evaluating its capacity utilization and identifying the bottlenecks.