The invention discloses a grounding device arranged at the end of a cable, which comprises a cable fixing part, a cable connection fastening piece and a grounding down part, wherein the cable fixing part is composed of a semicircle-type anchor ear and anchor ear connection rings at both ends of the anchor ear; the cable connection fastening piece comprises a chassis composed of a metal connection tip joint and a fixed ring, and chassis connection rings for lengthening both ends of the chassis; the anchor ear connection rings arranged at both ends of the anchor ear in the cable fixing part are closely connected with the chassis connection rings at both ends of the cable connection fastening piece through screws; the grounding down part is composed of a grounding down connection part, a grounding down wire and a grounding pin. The grounding device arranged at the end of the cable can ensure that the ground device is fixed and unloosened, and that the cable induced electricity generated in the construction process has the same potential as the earth, thereby preventing constructors from being electrocuted due to the induced electricity in the power cable construction process, and ensuring the personal safety in the construction process.