The modeling analysis study of the experimental units for the hydraulic servo control system of oil and gas suspension test bed was completed by analyzing the design principles of servo system. The corresponding analysis and design of the software and hardware architecture of control system were carried out, and the software system of the control system was compiled with configuration software WinCC. The position tracking experiments were conducted based on the motion control system. The results verify the effectiveness and feasibility of the project of the trajectory planning strategy and trajectory tracking of the fuzzy PID controller.