The interacting multiple model particle filter which combined by interacting multiple model and particle filter is applied in tracking maneuvering target. In order to analyze the performances of the interacting multiple model particle filter algorithm in the acoustic source tracking, the principle of the interacting multiple model particle filter algorithm is introduced at first. And then, the key parameters used in the algorithm are analyzed and the improved algorithm is concluded. Finally, the application of interacting multiple model particle filter in acoustic source tracking is simulated and the future research directions are pointed out.