This paper researches the visualization methods of smart substation secondary equipment simulation training system. Firstly, in order to determine the simulation target, the simulation object of intelligent substation is introduced and the system and network architecture is established. Secondly, it carries on the visual design from the following three aspects: the whole show of the system, general IED simulation, and SCD visual design. From this method, the real 220 kV smart substation secondary equipment can be simulated. Finally, the secondary equipment vector visualization design from the perspective of multimedia technology is achieved. The design can provide the corresponding reference for substation operation and maintenance personnel training, which is conducive to grasp the operation and maintenance of intelligent substation technology better.