Against Four Countermeasures advantage of bistatic radar,this paper investigates bistatic radar's detecting capability on the condition of different jamming style based decision criterion.From the view of energy this paper educes bistatic radar equation and jamming equation,establishes calculation model of bistatic radar detection range,discusses the variety rule of bistatic radar's detection capability under the pessimism and optimism decision criterion,and studies the effect of Stand-off Jamming and Stand-forward Jamming towards bistatic radar jamming exposed range.The computer simulation results in some typical cases are given.As a result,some useful conclusions are drawn by analysis,which provide important theoretic value for allocating bistatic radar and analyzing anti-jamming capability,and prove that bistatic radar has the stronger anti-jamming capability than single radar station.