The utility model discloses a mechanical automatic rope arrangement device which comprises a bothway screw rod and an unthreaded rod. The bothway screw rod is sleeved with a guide mechanism, the unthreaded rod is sleeved with a sliding block in a sliding mode, and two rope guiding rollers are connected between the guide mechanism and the sliding block side by side. A chain wheel is coaxially mounted at one end of the bothway screw rod, and the chain wheel is in transmission connection with power shafts of the rollers. According to the mechanical automatic rope arrangement device, an extra power source is needless, the chain wheel is used for transmitting power of the rollers to the rope arrangement device, certain speed ratio relation is guaranteed between the rotating speed of the chain wheel and the rotating speed of the rollers, thus, a winch can storage a plurality of layers of ropes, the ropes on the rollers are made to be arranged neatly and orderly, the phenomena of disordering, biting and squeezing of the ropes are avoided, the service life of the ropes is prolonged, and safety and reliability are improved.