The invention provides a computer hardware storing device demagnetizing device and relates to the field of computer hardware demagnetizing devices. The computer hardware storing device demagnetizing device comprises a box body and a base; the top of the left side of the box body is provided with a feeding door; a driven roller and a driving roller are sequentially arranged on the inner wall of a back plate of the box body from left to right; a conveying belt is connected between the surface of the driven roller and the surface of the driving roller in a transmission manner; a disturbing box iswelded to the inner top of the box body; a disturber is arranged below the disturbing box; a processing box is welded to the right side wall of the box body; the bottom of the processing box communicates with the top end of a discharging inclined pipe; and the bottom end of the discharging inclined pipe penetrates through the box body and extends to the right side of the box body. The computer hardware storing device demagnetizing device has the beneficial effects that a pulling rope is driven through a motor to act, so that the pulling rope drives the disturber to act along a limiting semicircular ring, the angle of the disturber is conveniently adjusted, and therefore materials on the surface of the conveying belt are subjected to thorough demagnetizing conveniently, and a blind area isnot likely to be generated.