The Method of genetic-support vector machine was applied to forecast the deformation of slope.It is showen that this method can escape from the blindness which is the common phenomenon in man-made choice of parameters of support vector machine.It enhances the learning efficiency of the support vector machine and the capability of forecasting.Through comparison between the forecasting and monitoring deformations

it can help the engineer to modify the plan and keep the stabilization of slope.The engineering case analysis indicates that there is an extensive prospect for the genetic-support vector machine.