The utility model relates to a building technical field, concretely relates to prefabricated building post rebar positioning combination formula steel bushing mould, including two post reinforcing bars of assembling into tetragonal L shape location single mode and being located the quadrangle structure, the location single mode includes transverse arm and vertical arm, the inboard equal spaced apart first location notch of a plurality of semicircular that is equipped with of transverse arm and vertical arm, and the interior angle department of transverse arm and vertical arm handing -over is equipped with second location notch, and the medial opening width that the notch was fixed a position to the second is less than its internal diameter, location single mode post assembling, the first location notch overlapping that lies in connecting portion department on transverse arm and the vertical arm forms the second and fixes a position the notch, and first location notch and second location notch match with the post reinforcing bar. The utility model discloses easy dismounting, low cost, and can effectively fix the reinforcing bar position, guarantee the accuracy of post reinforcing bar position.