Abstract: In order to further improve the operation efficiency and ensure the running safety of urban tram, the signal control system of urban tram is taken as the research object, and in combination with the fault\|safety principle, redundancy technology and distributed design concept, the structure and function of the signal control system is designed. By analyzing the classified architecture and the function modules of each functional subsystem, the main features of the system are summarized. The test and verification of the control system design prototype shows that the urban tram signal control system designed and developed has realized the functions of each distributed subsystem and the coordinated control between the subsystems, therefore it can execute correctly and control efficiently the roadside equipment, meet the running safety and operation needs of urban tram.