To provide an air suspension device which can easily and rapidly adjust roll stiffness of a vehicle and can reduce costs.

This air suspension device is provided with a plurality of air suspensions 1 and 2 provided with an air spring 6 mounted to an axle beam 3 rotatably supporting a wheel 4 for supporting a chassis frame 5, a lower seat mounted to the axle beam 3, a torque rod 12 extending toward a vehicle front D1 for connecting the lower seat 7 and the chassis frame 5, and a Stabilink(R) 11 extending toward the vehicle front D1 for connecting the lower seat 7 and the chassis frame 5 and arranged under the torque rod 12, and the Stabilink(R) 11 of the air suspension 2 among the air suspension 1 and 2 is made into a torque rod 14, while a stabilizer 15 is removably mounted to the lower seat 7 of the air suspension 2 toward a vehicle rear D2.