Abstract: By analyzing the roles of target motion parameter filter used in photoelectric tracking control system and the principle of IMM(Interacting Multiple Model), application of IMM filter used in photoelectric tracking control system was proposed. Simulator model of Application of IMM used in photoelectric tracking control system was established. By analyzing different target tracking data in simulation environment, the interactive multiple model algorithm could be used as a feedforward control data acquisition algorithm of combinational control technology in photoelectric tracking control system, photoelectric tracking control system uses interactive multiple model algorithm was more suitable than using -- filter for tracking of maneuvering targets.