A vacuum control valve connected between a vacuum chamber and a vacuum pump includes a control valve main body having a valve seat formed in a vacuum flow passage, a valve body that manipulates the valve opening by performing a linear motion to adjust a lift, a rod that transmits driving force from a linear driving unit that generates the driving force, a sliding/sealing member that seals the vacuum flow passage while allowing the rod to slide, and a cylindrical member that covers a sliding range of the rod. The sliding range includes a range movable from a valve body flow passage side to an exterior side. The cylindrical member has an outer peripheral surface, a working fluid absorption amount per unit area of the outer peripheral surface being smaller than that of an outer surface of the rod.