Auxiliary tool for slab embedded part mounting

The invention discloses an auxiliary tool for slag embedded part mounting. The auxiliary tool comprises a Z-shaped moulding board and a slab embedded part steel plate, wherein the Z-shaped moulding board comprises a beam inner side moulding board; the two ends of the beam inner side moulding board are connected with a top plate moulding board and a bottom plate moulding board which are integrallyformed, face towards the two sides of the beam inner side moulding board and are perpendicular to the beam inner side moulding board; the two sides of the slab embedded part steel plate are separatelyconnected to supporting leg parts through blocking sheets; the supporting leg parts are connected to bracket plates through blocking heads; the bracket plates are positioned on the top plate mouldingboard and are connected to the top plate moulding board; and one side, connected to the supporting leg parts, of the flat plate embedded part steel plate is further uniformly provided with a plurality of flat plate embedded pa