The invention discloses an intelligent learning system and a method applied to an electric power safety protection device. The intelligent learning system is applied to a protection device on a powersystem plant station side. The protection device is externally hung on a main switch of a plant station. Namely the protection device is deployed in a station control layer, the protection device is used for learning equipment and network conditions, including flow, protocols, ports, IP connection relations and the like in a local area network, in the local area network, unknown network attacks and network viruses are effectively prevented through intelligent analysis, and intruders from the outside of the local area network are discovered in time.