1, changes in regulations and policies: the issuance and management of medical licenses are subject to national regulations and policies. Changes in regulations and policies will lead to changes in the standards and procedures for the issuance of medical licenses, which will result in the original medical license can not continue to use.
2, insufficient qualifications: medical institutions need to meet certain qualifications to obtain a medical license. After obtaining the license, the qualification conditions change, for example, the hospital's medical equipment does not meet the new standards, which will lead to the medical license can not be renewed.