Electric power internet operation and maintenance early warning method and system based on knowledge graph

The invention discloses an electric power Internet operation and maintenance early warning method and system based on a knowledge graph, and the method comprises the following steps: obtaining services having an inclusion relationship with a to-be-monitored application system based on a pre-constructed electric power Internet knowledge graph, screening out the services with operation faults, marking the services, and storing the marked services in a database; obtaining a marked service; based on a pre-constructed electric power internet knowledge graph, obtaining association indexes having an influence relationship with the marked business, screening out abnormal association indexes from the association indexes, and marking the abnormal association indexes to obtain the marked association indexes; on the basis of a pre-constructed electric power internet knowledge graph, obtaining other associated indexes having influence relations with the marked associated indexes, screening out abnormal associated indexes