As the use of medical information improves, medical research is stepping up and legal disputes are rapidly increasing due to the broadening medical accidents. At the same time, there are security threats against the distribution of medical information by non - medical personnel, the forgery, and the difficulty of tracking. Blockchain based medical information sharing model is proposed to cope with such security threats. In this paper, the medical information sharing model based on blockchain is verified its effectiveness by actual implementation for it can or can't satisfy the security requirements for medical information. As a result, it has been confirmed that the blockchain based medical information sharing model can provide the reliability and traceability of medical information, and... provide a data recovery function for the prevention of forgery and alteration of medical information.