Nuclear power plant equipment full life cycle management and knowledge graph question and answer method

The invention provides a nuclear power plant equipment full life cycle management and knowledge graph question and answer method, which comprises the following steps: constructing a knowledge graph, uploading and storing category structure data in a knowledge graph database, and performing knowledge management and query; and establishing an intelligent question-answering system based on the knowledge graph, and making a reply by using the knowledge base according to the questions of the managers and the technicians. According to the method, an entity relation structure is optimized, and attribute content expansion is performed on a single entity; a historical fault repair mode is retrieved based on the equipment problem condition, and the fault repair experience can be shared; the monitoring of business personnel on the material condition can be greatly reduced; the lacking materials can be supplemented in time; the fault repair scheme is quickly retrieved, and the analysis and comparison cost of business per