PURPOSE: To provided the pressure control device which can feed fluid to an actuator at given pressure with high responsiveness kept on by making use of electroviscous fluid as working fluid.

CONSTITUTION: A first and a second electric field control section 5 and 6 capable of independently controlling electric field intensity are provided for the upper and lower course areas of a passage through which electroviscous fluid is circulated with pressure, and an actuator A is connected to an intermediate passage section 4m positioned between both the electric field control sections 5 and 6.