The invention discloses a multifunctional ground wire insulating rod, which comprises a ground wire clamp and an insulating rod, wherein the ground wire clamp comprises a fixed part and a movable part; the fixed part comprises an upper clamping plate; the upper clamping plate is a cavity body with an opening in the bottom surface; an arc-shaped recess is formed in the middle part of the cavity body; a longitudinal support rod and a movable rod are arranged in the cavity body; an elastic electric conductor is arranged between the support rod and the movable rod; the middle part of the elastic electric conductor is arranged in the arc-shaped recess; three fixing rings at least sleeve the elastic electric conductor along the arc length at equal intervals; the upper side of each fixing ring is connected with the lower end of a stretched spring; the upper end of the stretched spring is fixed with the upper clamping plate along the radial direction of the arc-shaped recess; the elastic electric conductor comprises a plurality of conductive copper wires which are arranged in parallel; one end of each conductive copper wire is fixed with the support rod; and the other end of each conductive copper wire is fixed with the movable rod and then can wind the periphery of the movable rod in a contracting and releasing manner. The multifunctional ground wire insulating rod has the advantages of being relatively wide in application range, convenient to use and firm to contact; meanwhile, the ground wire clamp has relatively good clamping force on a charged body; and the safety of using staff is ensured.