The flow control simulation study was conducted to address the problem of over-dependence on flow measurement device and long flow regulation time for the plunger type control valve in flow feedback control.Based on Fluent fluid simulation software,a 3D flow channel model of the control valve was established at 10% to 100% opening values,and the flow field distribution inside the control valve was simulated at 0.2 MPa to 1 MPa differential pressure between inlet and outlet.The control model of control valve opening was established,and the design of fuzzy PID controller was completed.The three flow control systems of the control valve were simulated and analyzed by MATLAB.The results show that:when the flow is regulated based on the designed opening control model ,the speed of the valve is effectively improved and the valve opening response time is less than 1.8 s,while the overshoot is completely eliminated and the steady state is more easily achieved.