The invention discloses a judicial case knowledge graph construction method of a dependency syntactic analysis relation extraction model. The method comprises the following steps of firstly, converting an unstructured judgment document into the structured data through an information extraction technology, then performing word segmentation, part-of-speech tagging and named entity identification processing on the structured data, and then extracting an entity relationship triple through a dependency syntax analysis relationship extraction model; and finally, importing the data in the triple forminto a Neo4j graph database in batches, and constructing a judgment document knowledge graph by utilizing the Neo4j and performing visual display on the judgment document knowledge graph. The dependency syntactic analysis relation extraction model can effectively extract the relation between the entities, is suitable for different large-scale corpora, and has the better transplantation applicability. The judgment document knowledge graph is intuitive and clear, so that the user can conveniently and efficiently master the information, and the great convenience is provided for the judicial work.