Orifice control choke valve is composed of two orifice plates which are molded from particular tungsten carbide. Through rotating one of the orifice plates, changing the relative angle position between the holes in the two orifice plates (size of the open area), then the adjustment between liquid or gas flow can be realized. Adjustable orifice control choke valve using labor-saving mechanism, and relying on the transmission of orifice plate valve controller to drive the rotation of fork. Through driving the rotation of valve, the throttling area will be under control, thereby controling the liquid flow. Compared with other valves，this type has the longest working life with the best erosion resistance.