Abstract: Found out the two factors which influences the extrusion flow rate based on the comment of the working principle and process features of SP system. Analyzed the structural of barrel temperature, identified the model, designed the three input three output controller, took the model free adaptive control method ( MFAC ) to control temperature, and carries on the simulation; establish the extruder outlet pressure system model, on the basis of the establishment based on the HSIC MFAC cascade control structure of model, and take on Human-simulated Intelligent MFA control method of MFAC penalty factor is modified, the final simulation. According to the field measurement, display based on MFAC SP system process control, the control of the extrusion flow rate is accuracy and stable.