The invention relates to a face-recognition-based weak current cabinet and a safety control method thereof. The cabinet comprising a cabinet body is characterized by further comprising a camera module, an automatic lock, an automatic door closer, a management communication module, and a cabinet alarm module; the camera module embedded on the cabinet body is used for recognizing face information of a user, the automatic lock disposed on a door of the cabinet body is used for automatically locking the door, the automatic door closer embedded on the cabinet body is used for automatically opening the door that is opened, the management communication module is used for communicating with a management system of the cabinet and controlling the automatic lock to operate, the face information recognized by the camera module is transmitted to the management system through the management communication module, and the cabinet alarm module is controlled by the management communication module to trigger alarming. The face-recognition-based weak current cabinet and the safety control method thereof have the advantages that safe utilization of the cabinet is guaranteed effectively, unauthorized persons are avoided operating the cabinet, the implementation mode is simple, and use value is good.