The invention provides a substation grounding wire assembling and dissembling apparatus, and belongs to the field of an auxiliary tool of the substation. The substation grounding wire assembling and dissembling apparatus comprises a base; a lifting arm and a control panel are arranged on the base; a mechanical arm is arranged at the upper end of the lifting arm; the lifting arm and the mechanicalarm are both in circuit connection with the control panel; vehicle wheels are arranged at the bottom of the base; and multiple supporting telescopic arms for supporting the ground are arranged on thebase. The substation grounding wire assembling and dissembling apparatus provided by the invention is convenient to move; the lifting arm can transversely and longitudinally move on the base and can carry a grounding wire to lift; the grounding wire can be assembled and disassembled through the mechanical arm automatically, so that the assembling and dissembling of the grounding wire can be stable, reliable and simple in operation; and meanwhile, working efficiency is improved, manpower is reduced, and safety risk is lowered.