The invention discloses a shared-air-chamber air spring system. According to the technical scheme, a front right air spring, a front left air spring, a rear right air spring, a rear left air spring, an air pump and an air compressor are connected with a shared air chamber correspondingly. Electromagnetic valves are arranged between the air springs, the air pump and the air compressor and the shared air chamber. All the electromagnetic valves, the air pump and the air compressor are connected to ECU correspondingly. Connection between the shared air chamber and a single or multiple air springsis realized through control over switching on and switching off of the electromagnetic valves, and thus rapid switching among different shared modes of the shared-air-chamber air spring system is realized. The shared-air-chamber air spring system has the beneficial effects that the occupied space of the air spring system is greatly reduced, and arrangement of the air spring system on a vehicle chassis is more convenient and fast; and meanwhile, the effective volume and air pressure of the air springs can be changed through selection of the shared modes according to driving demands, therefore the rigidity of the spring system is changed, and the comprehensive performance of a vehicle is improved.