The invention discloses a block chain-based academic information secure storage and sharing method, and the method comprises the following steps: 1, enabling a student to log in an academic information secure storage and sharing system for the first time, confirming academic information, and generating an unencrypted academic file; 2, generating an encrypted academic file locally stored by a student; 3, confirming the storage of an operation record of the academic information after the student confirms the academic information in the academic information security storage and sharing system; 4, generating an academic sharing file, and completing the sharing and checking of the shared file; and 5, carrying out exception handling. The method provided by the invention solves the problems of potential safety hazards, inconvenience in use and poor circulation caused by centralized local storage of important, sensitive and student privacy information such as student status, score and educational background and position in each college in the current educational administration management system, and constructs a safe, credible and efficient novel educational administration management system.