File management method, file management device and electronic device

The invention relates to a file management method, a file management device and an electronic device. The method includes establishing communication connection with a mobile terminal and obtaining first mark information of the mobile terminal; determining whether the first mark information belongs to a preset mark set or not; if the first mark information belongs to the preset mark set, performing corresponding operation on files after receiving operation orders such as file duplication, clipping or deletion sent from the mobile terminal. According to the technical scheme provided by the invention, in the premise of determining that the first mark information belongs to the preset mark set, a smart TV can put the mobile terminal into a list having higher authority, so that more permissions are given to the mobile terminal and the mobile terminal can change channels of the smart TV and also can perform operation such as duplication, clipping, deletion and the like for the files in the TV. Compared with perform