The utility model discloses a portable grounding wire winding device which comprises a movable framework and a winding plate. A wheel shaft is arranged at the bottom of the movable framework, wheels are installed at the two ends of the wheel shaft, a pull rod is arranged at the upper end of the movable framework, and the winding plate is formed by fixing end face frameworks at the two ends and a middle winding plate. The end face frameworks at the two ends are provided with corresponding shaft holes, a rotating shaft is arranged in the middle of the movable framework, the winding plate is fixed to the rotating shaft through the shaft holes in a sleeving mode, and a handle is arranged on the end face framework at the outer end. The handle is in threaded connection with the winding plate, and the pull rod is of an antenna telescopic structure. According to the portable grounding wire winding device, the double H-shaped winding plate with the handle and the U-shaped movable framework are adopted, standard winding and portable moving of a grounding wire are achieved, and standard management of the grounding wire of a transformer substation is achieved.