Interactingmultiplemodelsisthehotspotintheresearchofmaneuveringtargetmodelsatpresent.AhierarchicalideaisintroducedintoIMMalgorithm.Themethodisthatthewholemodelsareorganizedastwolevelstoco-work,andeachcellmodelisanimproved'current'statisticalmodel.Intheimprovedmodel,akindofnonlinearfuzzymembershipfunctionispresentedtogetoverthelimitationoforiginalmodel,whichcannottrackweakmaneuveringtargetprecisely.Atlast,simulationexperimentsprovetheefficientofthenovelalgorithmcomparedtointeractingmultiplemodelandhierarchicalinteractingmultiplemodelbasedoriginal'current'statisticalmodelintrackingprecision.