Based on the NARI RT21 platform, intelligent integrated monitor and management system with video surveillance, condition monitoring, fire control, access control, environmental monitoring and other centralized subsystems was researched and developed. This intelligent system circled around substation plane graph and primary equipment wiring diagram that had device management at their heart, and achieved intelligent linkage, information sharing, and play a role of supporting decision-making. This system helped the control center kept abreast of substation equipment operational status to provide technical support for shortening accident processing time, which can reduce the monitoring, operation and maintenance workload of staff.