The invention discloses a high-strength steel bar anchoring device and an implementation method thereof. The anchoring device comprises a first anchoring part, a second anchoring part and a high-strength steel bar which are sequentially arranged from outside to inside. The tip of an anchoring end of the high-strength steel bar is upset to form a pier head, the pier head end of the high-strength steel bar is sleeved by the first anchoring part, and the upper end of the first anchoring part is higher than the upper surface of the pier head; the high-strength steel bar located on the upper side of the pier head is sleeved by the second anchoring part, and the lower end of the second anchoring part is tightly attached to the upper surface of the pier head; and the upper end of the first anchoring part is detachably and fixedly connected with the lower end of the second anchoring part. Steel sleeves with different diameters are matched with anchoring plates with different diameters, so thatmulti-point matching anchoring of the high-strength steel bar in the longitudinal direction and the transverse direction is achieved, weak anchoring areas are avoided, and stable anchoring is achieved; and through the anchoring mode that the steel sleeve is combined with the pier head, the pier head is manufactured in advance, and the low anchoring efficiency caused by manufacturing the pier headon site is avoided.