Abstract: The configuration information software of Computer based Interlocking System for railway station is the software that could be used to display all kinds of static and dynamic data of stations. The purpose of this software was to lower the difficulties of remote fault diagnosis and decrease the dependence on technical personnel. For technical graph and circuit diagrams, as well as configuration information for railway station, this software was used C# programming language on Visual Studio platform, based on the data from existing drawings to implement the function of display static information electronically. For the method of circuit running, in this software, the graph depth traversal method was used to find and display each circuit path. Users could click to change the connection of the relay contacts, and change the circuit path display. The characteristic of this software is its generality. For different stations, after inputting data with unified standard, the software could be used to display the operation of circuit choosing and configuration information. With the help of this software, in practical circumstances, many difficulties of searching information can be solved properly, and enhancing the automation degree of fault diagnosis.