File encryption method, electronic equipment and external equipment

The invention relates to the field of information security, in particular to a file encryption method, electronic equipment and external equipment, and the file encryption method comprises the following steps: obtaining access information of the external equipment accessing the electronic equipment; judging whether the external equipment is authorized equipment or not according to the access information, and if yes, obtaining authorization parameters of the authorized equipment, wherein the authorization parameters comprise at least one of authorization time limit, authorization times and authorization authority; operating the file for the electronic equipment according to the authorization parameter; if not, disconnecting the communication connection with the external equipment, and sending alarm information to a specified terminal. According to the electronic device file encryption method and device, the electronic device file encryption safety can be improved, and the privacy leakage problem of the electro