In view of the problem that the effectiveness evaluation of the radar countermeasures re-connaissance system involves many factors and is relatively complex,an evaluation index system is proposed with 16 indicators in 4 aspects.The analytic hierarchy process(AHP)is used to deter-mine the weight of the indicators at all levels,and a fuzzy synthetic evaluation mathematical model is established for quantitative system evaluation and verified with examples.The verification results show that the method can quantify the qualitative judgment in the evaluation process,and the eval-uation results obtained are more fair and objective,and can be used for quantitative evaluation of radar countermeasures and reconnaissance systems.