Fabricated concrete laminated slab forming die

The utility model relates to an assembly type concrete laminated slab forming die which comprises a horizontally-arranged alloy plate body and an alloy pressing plate. The alloy plate body comprises a transverse plate and a longitudinal plate; the transverse plates and the longitudinal plates are cuboids with the same height and width; a plurality of U-shaped steel bar containing grooves are formed in the upper portions of the transverse plates and the longitudinal plates in the width direction at intervals, a plurality of first threaded holes are formed in the middles of the transverse plates and the longitudinal plates in the width direction at intervals, and the first threaded holes are each sleeved with a bolt matched with the first threaded hole in a threaded mode. The two ends of the two transverse plates are fixed between the opposite first threaded holes of the two longitudinal plates through bolts, a hollow cuboid pouring space is defined, and the upper portions of the two transverse plates and the u