Cable fixing device

The invention discloses a cable fixing device which comprises a bottom plate, rectangular cylinders are fixed to the two sides of the bottom plate correspondingly, first moving plates are slidably connected to the interiors of the two rectangular cylinders correspondingly, vertical plates are fixed to the bottoms of the sides, away from each other, of the two first moving plates correspondingly, and hollow plates are fixed to the sides, away from each other, of the two vertical plates correspondingly; a second moving plate used for clamping the switch is arranged in the hollow plate, a control mechanism used for controlling the second moving plate to move is arranged in the hollow plate, and a rectangular plate is fixed to the middle of the top of the bottom plate. Third moving plates are pressed to enable the two third moving plates to be close to each other, so that the two first moving plates are far away from each other, the distance between the two vertical plates is increased, the switch is conveniently