Abstract: Nonlinearity and uncertainty are the main factors which restrict the system performance. There are many methods to attempt to overcome the impact of these factors. A bilinear control strategy based on model bias separation is proposed in this paper. The bilinear control obtains the model bias information on line, and adopts a simple bilinear control structure. So it has good engineering significance. The sufficient condition for system exponential stability has been proved. The simulation results show the effectiveness of the proposed bilinear control strategy.