The invention relates to a folded house and a hinge device for house folding. The folded house comprises a fixed room and a movable room, wherein the movable room comprises a movable room gable wall board, an upper outer wall board, a lower outer wall board, a movable room bottom plate, an inner wall board and a movable room top plate, wherein the upper outer wall board can be folded to the uppersurface of the fixed room top plate, the inner wall board can rotate to the outer side of the fixed room, the lower outer wall board can be folded to the upper surface of the movable room bottom plateand can be rotatably folded to the outer side of the fixed room along with the movable room bottom plate, and the movable room gable wall board can rotate to the outer side of the fixed room. The folded house is quickly assembled and disassembled in the field, and is low in demand on field equipment and high in maneuverability. The wall board, the bottom plate and the top plate are connected through hinges. The house is a whole all the way, so that the house is conveniently transported, the assembling steps of field mounting are also reduced, dust and noise pollution of construction are reduced effectively, and emission of harmful gas and construction garbage are reduced. The panel which is folded can be attached tightly, and the length and height of the house are not increased, so that the house is conveniently transported to the maximum extent.