The invention discloses a large-space transformable multi-layer recreational vehicle. The recreational vehicle consists of an off-road vehicle, a recreational vehicle main body, a computer room, a drawing room, a storage region of telescoping components, a telescoping outer wall, a right outer wall, a left outer wall, a rotary integrated room, a left partition board, a right partition board, a bedroom, a refrigerator, a dining table, a kitchen, a telescoping roof, and the like. The large-space transformable multi-layer recreational vehicle adopts a separate mode; the off-road vehicle is in the front; the recreational vehicle main body is contracted during running, and all equipment is telescoped in a cuboid space; when the recreational vehicle is stopped and unfolded, the outer walls of the recreational vehicle unfold towards both sides; the telescoping roof unfolds, and the telescoping outer walls unfold, so that a semi-circular outer wall is formed on each side; all the equipment completely unfolds through a certain rotary stretch out of the cuboid, the unfolded equipment occupies the semi-circular space on each side, so that the whole of the recreational vehicle during parking is formed.