Aiming at the problems of poor synchronization performance of double cylinders under partial load situation and insufficient flow when more actuators moving in the same time, pressure compensation was adopted to compensate load and make load of double cylinders same, and pressure compensation valve was played as loading balance valve to make the system have anti-saturation performance to flow when more actuators moved in the same time. Electro-hydraulic proportional valve was used to control actuator velocity to save power. Using AMESim simulation, it provides theory evidence for pressure compensation optimization in system.