The embodiment of the invention discloses a
drug supervision method and device based on a block chain, a
server and a medium. The method comprises the following steps: obtaining
drug related information uploading requests of a
drug manufacturer user, a drug
distributor user, a
pharmacy user and a logistics company user, uploading circulation information of drugs in each link to a block chain, verifying drug information of two associated nodes according to an intelligent contract, and when a
verification result is abnormal, sending warning information to related users. Through the technical scheme of the embodiment of the invention, multi-party
collaboration of drugs of drug manufacturers, drug dealers,
pharmacy users and logistics companies can be realized, information in links of
drug production, drug circulation, drug sales, logistics distribution and the like is stored in the block chain, all parties jointly maintain the block
chain system, data cannot be changed randomly, and the drug supervision user can perform full-process drug tracing on the
target drug and respond to abnormal information in time, so that drug supervision is more intelligent.