The invention discloses a structural assembly of a positioning regulator. The structural assembly of the positioning regulator comprises a Z-axis regulating bracket, an X-axis regulating frame and a Y-axis regulating frame; the Z-axis regulating bracket consists of a supporting bracket and a plurality of high-low regulating bolts, and is provided with X-axis railways for assembling the X-axis regulating frame; a plurality of X-axis regulating bolts which penetrate through the Z-axis regulating bracket are arranged on one side of the X-axis regulating frame, and the X-axis regulating frame is provided with Y-axis railways for assembling the Y-axis regulating frame; a plurality of Y-axis regulating bolts which penetrate through the X-axis regulating frame are arranged on one side of the Y-axis regulating frame, and a reinforcing steel bar anchor bolt fixing plate is arranged on the Y-axis regulating frame; and thereby, reinforcing steel bar anchor bolts are fixed to the reinforcing steel bar anchor bolt fixing plate first, and then high-low, left-right or front-back regulation can be realized through the Z-axis regulating bracket, the X-axis regulating bolts and the Y-axis regulating bolts, so that positioning accuracy in installing can be improved, and the construction time can be shortened.