In order to ensure the accuracy and stability of the pressure signal required by the wet friction clutch,a hydraulic control system for the wet friction clutch was designed.The transfer torque of the wet friction clutch was obtained by analyzing the model of the wet friction clutch.The hydraulic control system was designed by using hydraulic pump,system pressure valve and hydraulic proportional pressure reducing valve.The working process of the hydraulic control system was analyzed,and the ordinary differential equation of the pressure produced by the clutch pressure valve was obtained.On this basis,the differential equation of the pressure required by the clutch was calculated.The simulation experiments were carried out under MATLAB/Simulink environment.The simulation results show that the designed hydraulic control system has a good control accuracy and stability for the lineaxis displacement signal and pressure signal.The deviation of the lineaxis displacement signal controlled by the hydraulic control system is less than 6667% than that of the calibrated lineaxis displacement signal,and the deviation of the pressure signal controlled by the hydraulic control system is less than 9524% than that of the calibrated lineaxis displacement signal.It shows that the designed hydraulic control system can provide accurate and stable working pressure signals for wet friction clutch.