The invention belongs to the technical field of prestress reinforcement, and provides a tensioned anchorage system for a prestress steel strands reinforced concrete pillar, which is used for anchoring the concrete pillar. The system comprises steel strands, two steel plate anchoring pieces, and bolts and nuts which are used for applying the prestress, wherein one end of each of the steel strands is fixed on one steel plate anchoring piece, and the other end of each of the steel strands is wound around the concrete pillar needing reinforcement by one circle and then fixed on the other steel plate anchoring piece; all steel strands are arranged in parallel and at equal intervals along the circumference of the concrete pillar; and the two steel plate anchoring pieces are arranged in parallel, and the two steel plates are connected by the bolts and the nuts. The system can apply the prestress to the wire strands and adjust the prestress by tightening or loosening the nuts, the prestress level can reach over 75 percent of the ultimate tensile strength, the original concrete pillar is not damaged at all, the bearing capability, the rigidity, the energy consuming capability and the ductility of the reinforced concrete pillar are improved.