Abstract: A foldable house comprises a body having a three-dimensional frame, each side of the three-dimensional frame being sealed by several horizontal sealing plates and vertical sealing plates but at least one vertical side of the three-dimensional frame being an open vertical side; at least a bottom plate; at least a first vertical plate; at least two second vertical plates; and at least a top plate open; whereby the bottom plate, the first vertical plate, each, second vertical plate, and the top plate are able to be folded into the open vertical side of the body to maintain the original volume of the body for easy transport, and the bottom plate, the first vertical plate, each second vertical plate, and the top plate corresponding to the open vertical side of the body are able to be unfolded to expand the interior space communicating to the body.