The invention discloses a legal consultation multi-mode key information structured extraction and identification method and
system, and relates to the field of legal services. The method comprises the steps of obtaining a legal consultation request submitted by a user; analyzing the multi-
modal evidence file, and establishing a triple mapping relationship among text contents, visual elements and spatial positions; constructing a legal evidence ontology dictionary, performing cross-
modal semantic understanding on visual-text joint information with a
spatial mapping relationship, and extracting a structured evidence tuple comprising legal entities, entity attributes and relationships among entities; and carrying out logic merging on the structured evidence tuple according to the case element template to generate a standardized case fact structural body. The method has the advantages that unstructured evidence files such as contracts, borrows and discriminants are automatically converted into structured case fact structural bodies which can be directly used for
case analysis, document generation and legal reasoning.