Abstract: Based on the stochastic prediction theory and pole-asslgnment methods,a new design schemefor a multivariable self-tuner is presented．It not only preserves the advantages of the usually-used pole-as-signment self-tuning controllers but also overcomes the drawback that the performances of servo-tracking andstochastic regulation could not be satisfied simultaneously．The effectiveness of the method has been verifiedby the simulatiOn results.