Abstract: Aiming at the inaccuracy and large error in traditional forecasting methods,an intelligent forecasting method of power grid load based on principal component analysis cooperative game is proposed in this paper. The power grid load prediction parameter model is constructed based on the multiresolution analysis theory and the optimal grid load parameters are obtained through IGOA Optimizing the Punitive Factor C and Nuclear Function Parameters of LSSVM and the main component analysis cooperative game method is introduced for the intelligent grid load prediction. The experimental results show the image fitted by this method is closer to the real image curve,indicating that the prediction accuracy is high and the error is small,which has certain advantages.