Document analysis method and device

The invention provides a document analysis method and device. The method comprises the following steps: determining a service type to which a to-be-analyzed document belongs; according to an entity type set mapped by a service type to which the to-be-analyzed document belongs, analyzing the to-be-analyzed document, extracting an entity contained in the to-be-analyzed document; according to the position of the entity appearing in the to-be-analyzed document and a syntactic structure between entities, analyzing the to-be-analyzed document; and obtaining a relationship between entities, constructing a knowledge graph and a mapping relationship between the knowledge graph and the to-be-analyzed document by taking the entities as nodes and the relationship between the entities as edges, and storing the to-be-analyzed document and the mapping relationship between the knowledge graph and the to-be-analyzed document. Thus, after the locked document is inquired subsequently, the knowledge graphmapped by the document i