In our method, a cloud platform must first be established, to allow each hospital to apply for its own cloud server without having to do its own setup, and to allow the hospital to manage and save its electronic medical record information. In addition, the electronic medical records of each hospital may be exchanged and shared through this platform. Medical personnel can log into the cloud platform and upload the generated electronic medical records. The established cloud platform can not only be used by hospitals, but patients may also log into the health care cloud to search for their own medical record information. In the mechanism provided, the communication between each role is presumed to be via a secure transmission channel, such as the SSL/TLS, to ensure data exchange security.