Threat assessment for the electronic warfare (EW) targets is very important for EW combat decision making.In order to deal with the imprecision and uncertainty of factors relative to EW targets during threat assessmenta multiattribute and group decisionmaking threat assessment model was set upwhich focused on the selection and determination of threat assessment indexes.Based on the scale quantitative functionthe qualitative indexes were quantified.Then the compromise ranking methodVIKORwas used to sort the threat targetsthus to made the overall utility maximum and individual regret minimum.Finallythe effectiveness of threat assessment model and the feasibility of the algorithm were proved through the threat assessment simulated on the supposed view of an EW.