In　this　paper,　the　performance　of　interference　sensing　of　full　duplex　cognitive　anti-jamming　(FCAJ)　receiver　impaired　by　phase　noise　in　local　oscillators　is　investigated　under　fading　channel.　Firstly,　energy　detection　based　the　interference　signal　to　noise　ratio　(INR)　of　FCAJ　receiver　with　phase　noise　under　different　channels　is　analyzed.　Then,　the　detection　and　false　alarm　probabilities　in　closed-form　for　FCAJ　receiver　are　derived.　Simulation　results　show　that　the　degradation　of　the　INR　due　to　phase　noise　is　more　severe　than　that　due　to　the　channel.　And　the　anti-jamming　capability　of　wideband　FCAJ　receiver　with　phase　noise　outperforms　the　narrowband　receiver　at　the　same　operation　frequency　bands.