Aiming at control algorithm of multichannel electrohydraulic force servo synchronous loading system, after analyzed the characteristic of the loading system, a decentralized model predictive control algorithm based on on-line support vector regression (SVR) was presented. In this algorithm, on-line SVR was utilized to estimate the models of loading channels, and these models were applied to decentralized model predictive control as the predict models. The simulation results demonstrate effectiveness of the algorithm.