The invention discloses an automatic rope distributing and discharging device of a winch, which comprises a speed-setting box and a rope discharging mechanism, wherein the rope discharging mechanism comprises a bidirectional screw, a ratchet shaft, a rope driving wheel, a rope pressing wheel and a slide block, the rope driving wheel is arranged on the ratchet shaft, the rope pressing wheel is correspondingly arranged outside the rope driving wheel, two sides of the rope pressing wheel are provided with compacting devices, the slide block is arranged on the bidirectional screw, and a ratchet pin is arranged between the rope driving wheel and the ratchet shaft. The invention has novel design, reasonable structure and high safety property, can not only lead a rope to be automatically sequentially distributed on a winding drum, can lead the rope to be forcedly driven out when placing the rope, and can be applied to various winches used under different conditions and environments.