The invention relates to an overhanging device for preventing a ground wire from falling and being broken, and belongs to the technical field of power protection device structures. The overhanging device comprises a ground wire bracket and a combining tower hardware string; a combining tower auxiliary string is arranged on each of the two sides of the combining tower hardware string; one end of the combining tower hardware string and one end of each combining tower auxiliary string are arranged on a porous combined plate; overhanging wire clips are symmetrically arranged on the two sides of the porous combined plate; the ground wire, which is wound with a pre-twisted type continuing strip in the length direction, is clamped in each overhanging wire clip; a pre-twisted wire auxiliary strip is arranged below the ground wire; the two ends of the pre-twisted wire auxiliary strip are wound on the ground wire on the outer sides of the overhanging wire clips; and the pre-twisted wire auxiliary strip is provided with an arc sag below the overhanging wire clips. The overhanging device is clever in structure design, simple and effective, and can effectively reduce the breeze vibration strand breaking probability of the ground wire, effectively prevent strand breaking and wire breaking of the ground wire and prevent the ground wire from being worn by the turnoff position of the pre-twisted wire auxiliary strip and the ground wire to realize full-life cycle design.