The system comprises: NPIC (network patient information center), OST (outpatient service terminal) and MRSU (medical record storage unit). Wherein, said NPIC is used for managing the patient information database; when the patients input their ID information, the NPIC authenticates the patients according to the patient information database; if authentication fails, NPIC prompts the patient ID is not confirmed; if the authentication succeeds, the patients can call their overall historical cases from the storage unit, and the outpatient service terminal will display the information accordingly; after diagnosis, the new patient information will be sent to and saved in the storage unit.