In order to overcome the problem of presence of parameter setting and poor dynamic response in traditional PID control electrohydraulic servo system, the RBF neural network PID was used to control system. Aimed at the problems existing in control, the control algorithm was improved. The results of the simulation and experimental research show that the improved RBFPID control algorithm effect is obviously better than the RBFPID and traditional PID control strategy. It has faster response speed and better robustness.