The personal data of citizens are scattered in countless medical systems, which can easily cause the leakage of personal information. Since the "Administrative Measures for Information Disclosure of Medical and Health Service Units (Trial)" was passed in 2010, it has stipulated that the health and traditional Chinese medicine administrative departments of local people's governments at or above the county level shall establish and improve the accountability system for information disclosure of medical and health service units, and Supervise, manage and punish "disclosure of information that should not be disclosed, or deliberate the disclosure of the identification information of service objects and personal privacy.

In the medical system, all citizens have separate accounts. This not only means that patients need to log in with different accounts and passwords repeatedly in multiple medical institutions, but also means that personal allergy history, medical insurance records, etc. are stored in different systems, resulting in the fragmentation of personal data by the system.

It is also difficult for the staff of medical units to access the medical system. They need to remember different passwords in each system, such as the registration system, charging system, inpatient system, pharmacy system, medical equipment system, etc. Moreover, with the increasing number of systems and the continuous change of medical personnel, it is also a difficult task to manage the identity of all personnel. Each change means that the system needs to be added, deleted, modified, and checked again and again.

Whenever the medical system needs to integrate medical services with new cooperative units, it is necessary to redevelop new interfaces in order to barely enhance the expansion ability, and the expanded service interfaces are difficult to meet the identity security standards.