Abstract: The paper indicated security functions of coal mine accident cases were strengthening security consciousness of miners, promoting implementation of security policy, providing reference for urgent processing of accidents, predicting danger of mines, promoting invested funds for mine security, encouraging generation of security conception and advancing development and application of new technologies and equipments. It analyzed structure, functions and development mode of database system of coal mine accident cases. The database realizes sharing and effective management of coal mine accident cases. The next work is to research functions of the database system including intelligent extraction of treatment measures of accidents and prediction of accident danger.