The invention provides an AR tumor knowledge graph multi-modal demonstration method based on intelligent search. The method comprises the following steps of: S1, building a multi-modal knowledge graphof a target tumor disease, building a target tumor knowledge graph based on multi-modal knowledge display according to related data, and storing the target tumor knowledge graph into a neo4j database; S2, adopting a unity tool system to set a human body three-dimensional model, clicking a corresponding organ position, demonstrating an AR multi-modal knowledge graph of a target tumor entity, and carrying out 2D and 3D conversion according to needs; and S3, performing multi-modal information display on the knowledge graph of the target entity on the basis of the combination of intelligent search and the visual knowledge graph. According to the method, the AR display of the multi-modal knowledge graph is adopted, intelligent search and 2D conversion are provided, multiple functions are fused, and therefore, a user can have a richer experience effect, and the knowledge obtaining efficiency of the user is improved.