The invention relates to an automatic high voltage ground wire loading and unloading device auxiliary operation support. The support comprises a base of which the bottom portion is equipped with multiple universal wheels, wherein two opposite side plates are vertically fixed to left and right sides of the base, a lifting beam driven by a motor is vertically slidably mounted on inner side walls ofthe two side plates, a front portion of the base is provided with a first foot switch for controlling synchronous rotation of the two motors, a sliding plate is slidably mounted between the two lifting beams in the front-rear direction, and a supporting groove for erecting a loading and unloading device lever is mounted in the middle of the sliding plate. The support is advantaged in that the structure is simple, the support is easy for realization, labor-saving and time-saving operation is realized, the automation degree is high, and operational problems of a large-scale ground wire loading and unloading device are completely solved.