Disclosed is a reinforced concrete slab floor with three-dimensional force-bearing structure, which comprises a cast-in-situ reinforced concrete upper slab (1), a cast-in-situ reinforced concrete rib (2), and hollow formworks (3) arranged at intervals between which the cast-in-situ reinforced concrete rib (2) is arranged, and a cast-in-situ reinforced concrete upper slab (1) is arranged above, the three elements are cast into an integrity, wherein the cavity forms (3) comprise an upper top board (4), peripheral side panels (5) and a lower bottom (6), the upper top board (4), the peripheral side panels (5) and the lower bottom (6) are linked each other to form a polyhedral closed cavity (7), the upper top board (4), the peripheral side panels are superposed with the cast-in-situ reinforced concrete upper slab (1) and the cast-in-situ reinforced concrete rib (2), the cavity (7) is provided wit at least one rod unit (8), characterized in that the upper top board (4) is provided with a center opening at the center, the bar member (8) exposes outward from the center opening. |