Multi-rate models are used to realize a high-grade tracking through the decomposition of the target's original measured results and state model to multi-resolution.A Markov chain is introduced into the interacting multiple model (IMM) algorithm to control the interaction of the several models to realize the tracking of high maneuvering targets.A full-rate tracking method of a maneuvering target by means of interacting among multi-rate models is proposed here.High precision and full-rate of the tracking are guaranteed by interlacing several times' filtering results.Simulation results and analysis demonstrate that compared with conventional full-rate IMM algorithm the new method offers a much better tracking.