The invention discloses a foaming cement plate prefabricated wall, which comprises a cement substrate unit and slurry. The cement substrate unit comprises a plurality of prefabricated foaming cement plates; each prefabricated foaming cement plate is provided with a cement plate body and a reinforcing plate; each cement plate body is provided with two plate faces arranged in a spaced mode, two first side surfaces arranged in a spaced mode and connected with the plate faces correspondingly, and two second side surfaces arranged in a spaced mode and connected with the plate faces and the first side surfaces correspondingly; and first groove openings and second groove openings of the prefabricated foaming cement plates are filled with the slurry, and the prefabricated foaming cement plates aremade to be mutually connected. According to the foaming cement plate prefabricated wall, through mutual communicating of the first groove openings and the second groove openings of the prefabricatedfoaming cement plates, the first groove openings and the second groove openings of the prefabricated foaming cement plates can be quickly filled with the slurry, and the prefabricated foaming cement plates are mutually connected so as to achieve the purposes of quick assembly construction and high structural strength.