Thetraditionaldataenvelopmentanalysis(DEA)modelcanevaluatetherelativeefficienciesofasetofdecisionmakingunits(DMUs)withexactvaluesofinputsandoutputs,butitcannothandleimprecisedata.Imprecisedata,forexample,canbeexpressedintheformoftheintervaldataormixturesofintervaldataandordinaldata.Inthisstudy,across-efficiencymethodisintroducedintotheDEAmodeltocalculatetheintervalofcross-efficiencyvalues,basedonwhichanewTOPSISmethodisproposedtoranktheDMUs.Twoexamplesarepresentedtoillustrateandvalidatetheproposedmethod.