The invention discloses a multi-hierarchy user permission management method. All hierarchical relationships are centralized on organizations, superior-subordinate relationships of users, characters and permissions are transferred by the organizations to which the users, the characters and the permissions belong, and complexity brought to permission system design by multiple superior-subordinate relationships is greatly reduced. In the multi-hierarchy user permission management method disclosed by the invention, a data range is only associated with the organizations; after the users are authorized by "organizations-characters", when operation permissions are limited by the "characters", data operation ranges of the users are also limited by the "organizations", so that service logics of checking legalities of the data ranges are greatly simplified. Accounts, the organizations, the characters and the permissions have many-to-many relationships, and in an actual service, very high operation flexibility can be brought in. The multi-hierarchy user permission management method disclosed by the invention is designed on the basis of universality, and can be completely reused by modular design for various management systems of multi-hierarchy organizations, such as the education industry, government departments, group companies and the like. Based on the points above, the multi-hierarchy user permission management method disclosed by the invention can bring the effects of greatly simplifying the permission system service logic of the multi-hierarchy organizations and greatly reducing range checking logics, so that product quality can be improved, and development and maintenance cost is greatly reduced.