The invention provides a fabricated integrated large plate and belongs to the field of fabricated buildings. The fabricated integrated large plate comprises a plurality of vertical precast slabs whichare vertically arranged, and every two adjacent precast slabs are connected through reinforcement. Compared with the prior art, the fabricated integrated large plate is more reasonable, better in intensity rigidity and waterproof effect and more convenient and efficient to manufacture, more materials are saved, and the cost is lower. According to the fabricated integrated large plate, battens arespliced in the vertical direction, for a residence and other buildings with the consistent floor height, a few of battens are used in specification, the production efficiency is high, and the cost islow. A fabricated integrated outer plate spliced through the fabricated integrated large plates can be flat in surface, plastering can be omitted, and therefore materials are saved, the constructionefficiency is high, and the cost is reduced. Further, the fabricated integrated large plates are hoisted together after outer wall decoration is completed in advance in a factory, the construction efficiency and the construction quality can be improved, and the cost is saved.