The invention provides a notarization intelligent question and answer customer service method and
system based on a
knowledge graph, and relates to the technical field of information, and the method comprises the steps: collecting multi-source heterogeneous data in the notarization field, forming an entity set and a relationship set, combining to form an initial
knowledge graph, carrying out a dynamic update
mechanism based on time decay, and supplementing to form a dynamic
knowledge graph. Carrying out vectorization expression to obtain an atlas vector; receiving a multi-
modal problem, determining fusion features, performing deep semantic understanding, obtaining semantic features, determining a user intention, and forming a structured query expression; based on the user intention and the structured query expression, carrying out multi-hop reasoning in the dynamic knowledge graph, carrying out similarity calculation by utilizing graph vectors, determining a reasoning path in combination with the user intention, carrying out knowledge association reasoning along the reasoning path, obtaining a preliminary reasoning result, carrying out
interpretability analysis on the preliminary reasoning result, and obtaining a final reasoning result; and generating a reasoning chain and a
confidence score, forming a detailed reasoning result, and finally generating a personalized answer.