A kind of electronic health record shared system based on block chain

The embodiment of the invention discloses a kind of electronic health record shared system based on block chain.System includes：Authentication module, for receiving the login account of user's input, login account is identified, for operating right corresponding to login account configuration；Processing module, for being connected with pre-established block chain Database, block chain database includes multiple nodes, the corresponding hospital database of each node；Enquiry module, for receiving the query statement of user's input, and electronic health record corresponding to being obtained from block chain database according to query statement, and the electronic health record of acquisition is showed into user.This embodiment of the present invention is based on block chain technique construction electronic health record shared system, all data are only retained in caused by legacy data in hospital server, only data cryptographic Hash is stored on block chain database, it can not be distorted with reaching data, be classified access, have access to retrospective purpose, there is the advantages of improving Information Security.