PURPOSE: To improve the degree of freedom in a design for attitude control over a vehicle body as compared with that in the past.

CONSTITUTION: A feedback controlled variable on the basis of at least a car height is operated by an arithmetic unit M5 based on the car height in a part corresponding to each wheel detected by a car level detector M3, while a first feed-forward controlled variable based on body acceleration is operated by another arithmetic unit M6 on the basis of body acceleration detected by an acceleration detector M4, and a target position of the car body is set by a target position setter M7 on the basis of the body acceleration and thereby a second feedforward controlled variable on the basis of the target position is operated by an arithmetic unit M8. On the basis of the feedback controlled variable and both these first and second feedforward controlled variables, a pressure regulator M2 is controlled by a controller M9, whereby pressure in a working fluid chamber of each actuator M1 is regulated and controlled according to these controlled variables.