Medical data sharing method for secret protection and device based on block chain

The present invention provides a kind of Medical data sharing method for secret protection and device based on block chain, belongs to communication technical field.The Medical data sharing method for secret protection based on block chain of the present invention, including：Establish case history index chain：Case history is established for every sufferer and indexes chain ID, hash algorithm is carried out according to the identity information of every sufferer, to generate the sufferer ID with unique mark, completes the registration of each sufferer in case history index chain；Establish case history chain：The medical information for the sufferer that medical institutions are sealed up for safekeeping recorded in a block of case history chain, and the ID that the absolute address of the block and the sufferer are indexed to chain carries out mapping processing, and the result that mapping is handled recorded in the block where corresponding sufferer indexes the ID of chain；When sufferer is seen a doctor, the identity of the sufferer inputted according to the medical institutions enters row information hash algorithm, according to the sufferer ID of the mark of generation, medical information of the inquiry to the sufferer in case history chain.