The invention provides a grounding wire winding device which is used for achieving intelligent manufacturing of grounding wires. The grounding wire winding device comprises a paying-off assembly, a conveying assembly, a winding assembly, a shearing assembly, a locking mechanism and a clamping mechanism. Storage and paying-off of a wire coil are achieved through the paying-off assembly, a wire on the wire coil penetrates out through a guiding pipe and a wire pipe, the end of the wire is conveyed under the action of the conveying assembly, and the conveying assembly achieves conveying of the wire mainly through an upper clamping wheel and a lower clamping wheel which are located on the upper side and the lower side of the wire. The winding assembly arranged on the right side of the conveying assembly can be used for winding the wire, the end of the wire is clamped through the clamping mechanism, and then a turnplate rotates to drive the clamping mechanism to rotate, so that the wire is wound around a wire winding bar; and after the wire is wound around the wire winding bar by several circles, the shearing assembly starts to work to shear the grounding wire obtained through winding. By the adoption of the grounding wire winding device, mechanical manufacturing of the grounding wire can be achieved, and the physical labor of workers is relieved.