The invention discloses a low-retraction secondary tensioning anchor, comprising: a cylindrical anchor plate, wherein a plurality of anchor holes are arranged on the anchor plate; A pressure nut is sleeved on the anchor plate, and the pressure nut and the anchor plate are connected through threaded cooperation; The force applying ring is sleeved on the pressure nut, the outer surface of the forceapplying ring is provided with a plurality of screwing grooves along the circumferential intervals, and the force applying ring can rotate under the rotational force exerted by the screwing grooves todrive the pressure nut to screw into the anchor backing plate and abut against the anchor backing plate. A steel bar or round steel is used as a wrench to be inserted into the screw-applying groove to rotate the force-applying ring so as to drive the pressure-bearing nut to screw into the anchor cushion plate and abut against the anchor cushion plate, the anchor is locked and the anchor is locked, and the screw-applying groove is arranged on the force-applying groove, so that the pressure-bearing nut can be screwed more conveniently without destroying the integrity of the pressure-bearing nut.