CCM (Cloud Chain Medical Treatment, Cloud Chain Medical Treatment) is an open information service platform developed based on blockchain technology, which can provide information on medical treatment generated by multiple devices including smartphones and distributed in different medical institutions. Information is securely brought together and managed. Medical consumers can set different read permissions for each personal information according to their needs, so as to fully own the ownership and control of their own medical information. With the consent of consumers, medical service providers can enter medical records of medical objects into CCM. Individuals, research institutions or enterprises who wish to obtain other people's medical information can obtain the required medical information resources after obtaining the consent of the information owner.