The invention discloses a portable fast winding and unwinding device for alarm ground wires and mainly relates to the technical field of electric power facilities. The portable fast winding and unwinding device comprises a support plate. A first bracket is arranged on the top of the support plate. A support shaft is arranged on the top of the first bracket. A winding cylinder is arranged on the support shaft. A crank is arranged at one end of the support shaft. A second bracket is arranged on one side of the first bracket. A guide rod is arranged on the top of the second bracket. A sliding block is arranged on the guide rod. A ground wire penetrating hole is formed in the sliding block. A first support rod is arranged at the bottom of the sliding block. An audible and visual alarm device is arranged on the side, away from the second bracket, of the first bracket. The portable fast winding and unwinding device for the alarm ground wires has the beneficial effects that the ground wires can be wounded and unwounded fast, the ground wires can be arranged automatically on the winding cylinder when wound, the ground wires can be orderly arranged on the winding cylinder, an audible and visual alarm can be given out, and the situation that people do not see the ground wires and are stumbled by the ground wires can be avoided.