Abstract: Hydraulic slide valve is a typical flow control device and its stability and reliability are the criterion when judging the performance of a slide valve.A new integration process was put forward to meet such desired need in slide valve that is characterized by the complex configuration. First, the objective was identified according to the performance improvement. Second, the initial model of model was made, and then the initial CFD analysis was carried out to predict the performance of the valve. Third, the response surface fuction of transient hydrodynamic force was acquired based on parametric modeling, CFD analysis, design of experimental and approximation model technology. Finally, the new structure size of flow channel was obtained by optimization which was made based on response surface model.