The utility model discloses an auxiliary hardness measurement device for an anchorage device clamping piece. The auxiliary hardness measurement device comprises a base, a supporting nut, multiple supporting beams, a screw rod and a pressure head, wherein the first ends of the supporting beams are fixedly arranged on the base; the second ends of the supporting beams are collected on the outer wall of the supporting nuts; the screw rod and the supporting nut are in screw-thread fit; the screw rod penetrates through the supporting nut; and the pressure head is fixedly connected with the bottom end of the screw rod and is used for applying pressure to the anchorage device clamping piece. According to the auxiliary hardness measurement device for the anchorage device clamping piece, the pressure head is driven to move downwards by virtue of the rotation of the screw rod in the supporting nut, and pressure is applied to the clamping piece in the anchorage device, so that the gap between the clamping piece and an anchor ring is reduced, and the condition that the clamping piece moves when hardness measurement is performed is avoided. Therefore, the hardness measurement accuracy of the anchorage device clamping piece is improved.