An auxiliary fixture for a steering wheel force angle meter calibration device is disclosed. A Z-axis lead screw is mounted on the middle of a lead screw sliding table base through a bearing, a lead screw sliding table hand wheel is installed on an end portion of the Z-axis lead screw, a Z-axis guide optical axis is disposed on the lead screw sliding table base of both sides of the Z-axis lead screw, the Z-axis guide optical axis is sleeved by a screw nut matching the Z-axis lead screw, the lower end of the lead screw sliding table base is mounted on Y-axis spacing adjustment sliding optical shafts by Y-axis spacing adjustment linear bearings, both ends of the Y-axis spacing adjustment sliding optical shafts are mounted on two X-axis guide rails by X-axis spacing adjustment linear bearings, a fixation plate is mounted on the screw nut, and a locking clamp is mounted on the fixation plate; side surfaces of the X-axis spacing adjustment linear bearings and the Y-axis spacing adjustment linear bearings are provided with linear bearing fixation bolts; and the locking clamp includes a clamp distance adjustment plate, a clamp sliding supporting rod, a clamp distance fixation rod, and a clamp locking handle. The labor intensity of the auxiliary fixture is reduced, the work efficiency is obviously improved, and the auxiliary fixture is economical and applicable, is practical, safe andconvenient, and is remarkable in implementation effect.