The utility model relates to a computer drive screw-free fixing device. The utility model is characterized in that the computer drive screw-free fixing device comprises a positioning sheet, a movable sheet and an elastic resetting structure, wherein, the positioning sheet is provided with position protrusion which is matched with the position of a screw holes for the installation of a drive. The movable sheet is rotationally connected with the positioning sheet. The distance from the driven end of the movable sheet to a rotating shaft corresponds to or is slightly bigger than the height difference of the rotating shaft and the end part of the positioning protrusion. The positioning sheet is elastically connected with a mounting bracket of the drive through the elastic resetting structure. The positioning sheet joints with an installing bracket of the drive in the reset state. The disassembly and the assembly of the drive can be realized by wrenching the movable sheet of the utility model with hands. That screws are not needed to be assembled and disassembled enables the installation and the replacement of the drive to be very convenient, and the fixation of the drive is reliable.