The electro-hydraulic proportional system of bucket of a certain type of hydraulic excavator was taken as the research object.Aiming at the nonlinear and time-varying problems of electro-hydraulic proportional system,the basic physical model of the system was established by using AMESim,the fuzzy PID controller suitable for the system was designed by using the fuzzy toolbox in MATLAB,and the joint simulation was completed according to the respective advantages of MATLAB and AMESim,and the control performance of PID and fuzzy PID algorithms was compared.The simulation results show that compared with PID,the bucket electro-hydraulic proportional system has better trajectory tracking performance under fuzzy PID control.