The invention provides a ground wire side needle preventing wire breakage caused by ice flash-over, and a ground wire. The ground wire side needle preventing wire breakage caused by ice flash-over includes a clamp hoop and needle bodies, wherein the clamp hoop is annular, and is provided with an annular inner side surface and an annular outer side surface; the inner side surface forms a clamping space for clamping a ground wire; the needle bodies are welded to the outer side surface of the clamp hoop in the direction being perpendicular to the outer side surface of the clamp hoop; the length of each needle body is more than 5 times of width or height of each needle body; the clamp hoop and the needle bodies are made of stainless steel materials; and the ground wire side needle sleeves the ground wire. If the ground wire side needle preventing wire breakage caused by ice flash-over is arranged on the surface of the ground wire, air insulation breaks down, flash over occurs and electric arc appears when the ground wire because the arc sag changes and the distance between leads exceeds the safety margin in the icing situation, the ground wire side needle can avoid electric arc ablating the ground wire and prevent fusing the ground wire as the needle bodies migrate the electric arc to the tip ends of the needle bodies from the surface of the ground.