The invention discloses a data line storage device. The data line storage device comprises one or more fixing devices. The data line storage device comprises a supporting frame, a rotating shaft, a plane volute spring, a plug block, afirst pulley, a second pulley, aplug pin, and a clamping groove, wherein the supporting frame comprises a horizontally arranged first part and a second part arrangedvertically at one end of the upper surface of the first part; the plug block is in a T-liked shape formed by fixing a vertical part to the middle of a circular plate, the vertical part of the plug block is inserted exactly in a groove, the circular plate of the plug block abuts against the top surface of the rotating shaft, and the circular plate and the rotating shaft are detachably connected; and the lower part of the vertical part of the plug block is made of rubber. When the second pulley moves to the first pulley and abuts against the first pulley, plough grooves of the first pulley and the second pulley only allow a to-be-stored data line to penetrate through; and when a handle of the rotating shaft is rotated, and the plane vortex spring is compressed to the limit, a bolt can successively penetrate through the handle and the first part to fix the handle and the first part. The data line storage device has the advantages of simple structure, convenient winding and the like, and can be widely applied to the technical field of data line storage devices.