High-pressure gas flow adjusting valve

The invention discloses a high-pressure gas flow adjusting valve. The high-pressure gas flow adjusting valve comprises a flow valve, a pilot servo valve and a displacement sensor; the flow valve comprises a valve body, a valve base, a valve sleeve, a valve element, a valve sleeve end cover, a lower end cover, a spring guide sleeve and a return spring; the lower end cover is fixed on the lower endsurface of the valve body; the displacement sensor is fixed on the lower end cover; the spring, the spring guide sleeve, the valve sleeve end cover, the valve sleeve, the valve element and the valve base are mounted in an axial through hole of the valve body in sequence from bottom to top; the valve sleeve coats the outer wall of the valve element; an annular boss is arranged on the outer wall ofthe valve element; the annular boss is positioned in a lower hole of the valve sleeve for dividing an accommodating cavity of the lower hole into a control cavity a and a control cavity b; second andthird hole ways are formed