A relief valve device includes: a housing including a valve chamber, an orifice, and a relief discharge port; a valve body that opens and closes the relief discharge port while moving inside the valve chamber of the housing; a relief valve including an elastic member that elastically biases the valve body in a direction in which the valve body closes the relief discharge port; and an oil control valve that controls the supply of oil into the valve chamber, wherein an inlet port for the oil supplied from the oil control valve and the orifice are configured such that oil can always circulate in the valve chamber.