The invention relates to the technical field of hierarchical diagnosis and treatment, in particular to a hierarchical diagnosis and treatment support service method and platform. The platform comprises a patient prime index module, an intelligent recommending and visiting module, a registering module, an inspection report inquiring module, an inspecting and receiving module, a diagnosis and treatment file establishing module, an information displaying module, an inspection report uploading module and a Saas platform. According to the hierarchical diagnosis and treatment support service methodand platform, the establishing, searching and maintaining of patient basic information indexes can be provided through the patient prime index module, the recognizing, matching, combining and repeateddata deleting of patients across medical organizations are realized, the mappings between medical records of the different medical organizations and identification of the different patients are combined, and a visiting view is formed through integration; through the intelligent recommending and visiting module, visiting files of the patients can be analyzed, and community hospitals, comprehensivehospitals, specialized hospitals and relevant departments are intelligently recommended according to the administration areas, current geographic positions and visiting demand matching degrees of thepatients.