Fabricated house capable of being cyclically used and mounting method

The invention relates to the technical field of buildings, in particular to a fabricated house capable of being cyclically used. The fabricated house comprises a three-hinged-arch roof board. The three-hinged-arch roof board comprises multiple groups of angularly-arranged house boards. Each group of house boards comprise two roof boards, wherein one ends of the two roof boards are mutually hinged,and the other end of each roof board is arranged obliquely downwards and fixedly connected with a wall board. The wall board is used for supporting the three-hinged-arch roof board, the lower portionof the wall board is fixedly connected with a prefabricated foundation, the lower end of the prefabricated foundation is mounted in a foundation, and the upper end of the prefabricated foundation isfixedly connected with the wall board. The opposite side faces of the two roof boards are fixedly connected through two horizontally-arranged round pipes, and ridges are formed at the mutually-hingedpositions of the roof boards