The invention relates to the technical field of oil and natural gas drilling equipment, in particular to a double-layer solid control system with a small covering area. The double-layer solid controlsystem comprises a track fixedly connected to a foundation, a pry movably connected to the track, a supply tank, a vibrating screen tank, a centrifuge tank, a suction tank, a cast-in-place pry, an intermediate support and a reserve tank, wherein the supply tank, the vibrating screen tank, the centrifuge tank, the suction tank and the cast-in-place pry are fixedly connected with the pry correspondingly, the bottom of the intermediate support is fixedly connected with the tops of the suction tank and the cast-in-place pry, and the reserve tank is fixed to the top of the intermediate support. According to the double-layer solid control system with the small covering area, the structure is simple, the track length covered by the whole solid control system is shortened by about 7 meters, and the covering area is reduced.