PURPOSE: To provide a stable characteristics even under high temperature atmosphere.

CONSTITUTION: A fluid control valve is provided with a housing in which a valve chamber 2 is provided and a flow-in hole 3, a flow-out hole 4, and a through-bole 5 interconnecting the inside and outside of the valve chamber 2 are provided, a bearing 8 fitted closely into the through-hole 5, a valve stem 6 which is passed through the center of the bearing 8 and one end of which is positioned inside the valve chamber 2 and the other end of which is positioned outside it, a valve element 7 which is positioned inside the valve chamber 2 so that it can open and close the flow-in hole 3 and connected integrally to the valve stem 6, and an actuator 11 connected to the other end of the valve stem 6. Also it supports the valve stem 6 by the inner peripheral surface of the bearing 8. In addition, it is provided with a bush 9 which forms a specified clearance between its outer surface and the inner surface of the through-hole 5 and a plug 10 of which lower surface is engaged with the upper surface of the bush 9, of which outer surface is engaged with the through-hole 5, and in which a specified clearance is formed between the inner surface and the peripheral surface of the valve stem 6.