The invention belongs to the technical field of demagnetization equipment, in particular to an efficient demagnetization device for a
computer software storage device. The device comprises a shell, amounting frame, a lead screw, a lead screw sliding table, a connecting plate, a
micro motor, a demagnetizing coil, a bracket, a side door, a
handle, a guide rail, rollers, a
fixed frame, a pull plate,a rectangular plate, a transmission rod, a stepping motor, a movable frame, a spring, a limiting column, a through hole, an L-shaped plate, a
cam, a
fixed frame, a
cam motor, an electric push rod anda push plate. According to the invention, the storage device needing demagnetization is placed between the two L-shaped plates and the rectangular plate; the
cam motor is started through the externalswitch; the cam motor drives cam to rotate, and the cam rotates to drive the movable frame and the L-shaped plates at the two ends of the movable frame to slide in the two through holes in one end ofthe
fixed frame, so that the two ends of the L-shaped plates fix the storage equipment between the rectangular plate, the L-shaped plates and the fixed frame, the storage equipment of different sizescan be fixed conveniently, the demagnetization of the storage equipment is facilitated, and the demagnetization efficiency is improved.