The invention discloses a heat preservation and floor heating integrated reinforced concrete two-way laminated slab and a pouring process thereof. The heat preservation and floor heating integrated reinforced concrete two-way laminated slab comprises a bottom plate, longitudinal rib beams, transverse rib beams, foam blocks and a face plate, the foam blocks are located in a cavity formed by the bottom plate, the longitudinal rib beams, the transverse rib beams and the face plate, floor heating line pipes are laid between the foam blocks and the face plate, transverse through holes are formed in the transverse rib beams, and strip-shaped square holes with the bottoms communicating with the transverse through holes are formed in the position, above the transverse rib beams, of the face plate. The heat preservation and floor heating integrated reinforced concrete two-way dense rib sandwich laminated slab has the characteristics of less self weight, good integrity, heat supply function, heat supply and the like, on the premise of ensuring the integrity, safety and building energy-saving requirements, the construction of floor heating laying is simplified, the manufacturing cost is reduced, and the market application prospect of floor heating can be greatly expanded.