The invention provides a hot-extrusion production line of a prestressed anchorage device clamping piece, and relates to the technical field of extrusion molding of metal materials. The problems such as complex working procedures, great investment and high cost in the existing machining method such as cold extrusion, warm extrusion, hot extrusion, hot forging and the like can be mainly solved. The production line consists of three working procedures such as upsetting-extruding blanking, combined extrusion and punching reshaping: (1) carrying out a upsetting-extruding blanking working procedure, namely putting a heated bar into an upsetting-extruding die to obtain a frustum with a centering hole; (2) after blanking, collecting a blank by a mechanical blank collecting hand, and transporting the blank into a combined extrusion die by virtue of a transporting chain to carry out the combined extrusion working procedure, so that a semi-finished product of which the upper part and the lower part are provided with blind holes can be obtained by means of combined extrusion; and (3) after the blank is collected by the mechanical hand, transporting the blank into a floating and positioning punching reshaping die by the transporting chain to carry out punching reshaping, so that the punching reshaping working procedure is completed, a semi-finished product of an anchorage device clamping piece is obtained; and collecting a workpiece by the mechanical hand, and transporting the workpiece into a blank storing box. The production line is fewer in working procedures, high in efficiency, less in investment, long in the service life of the die, quick in production speed, and good in the concentricity of the blank.