File fixing folder

The utility model discloses a file fixing folder comprising a folder body. A flat positioning board and an arched holding board are arranged on the folder body; the side surface of the folder body in the changing direction of the arched shape of the holding board is an enclosed side surface formed by connecting the positioning board with the holding board; a slide groove having the same direction as the change of the arched shape is formed on the holding board; rolling balls capable of rolling along the slide groove are mounted between the slide groove and the positioning board; a fixing part capable of fixing the folder at a blackboard is mounted at the back of the positioning board. When a file fixing folder adopting the structure needs to hang the files, the files are tucked into the clearance between the rolling balls and the positioning board, and the rolling ball under the gravity action possesses the trend of moving downwards and is guided by the slide groove to compress the files, and the file fixing