A building is formed complementarily with preforms

The utility model relates to the field of energy-saving green buildings. The utility model further discloses a building formed by complementation of the prefabricated parts. The building constructiondevice solves the problems that a common building is constructed on site through workers, the working efficiency is low, the labor intensity of the workers is increased, and the surrounding environment is polluted, and comprises two first cylinders, and first clamping columns are fixedly installed at the top ends of the two first cylinders; according to the utility model, through the cooperative use of the first clamping column, the first clamping groove, the second clamping column, the second clamping groove and the like, the working efficiency can be improved, and the labor intensity of workers is reduced; through cooperative use of the strip-shaped plates, the long rods, the base and the like, the stability of a building can be improved, and due to the fact that all components in the building are prefabricated