The　normal　stiffness　and　damping　characteristics　of　a　fixed　joint　interface　with　oily　porous-media　were　studied　with　tests.　A　per　unit　area　parameter　identification　method　of　an　equivalent　single　degree　of　freedom　(SDOF)　joint　interface　with　an　adjustment　coefficient　was　adopted　to　identify　its　parameters.　Using　the　relative　displacement　method,　a　vibration　system　with　arbitrary　mass　m　was　equivalent　to　a　standard　SDOF　joint　interface　system　with　mass　Me,　and　its　stiffness　and　damping　coefficients　were　recognized　conveniently　and　rapidly　with　high　identification　accuracy.　With　the　method　mentioned　above,　the　stiffness　and　damping　coefficients　were　identified　for　a　joint　interface　of　45#　steel　and　one　with　oily　Fe-based　porous-media,　respectively.　By　comparing　the　results,　it　was　shown　that　the　oily　Fe-based　porous-media　joint　interface　has　better　dynamic　characteristics　than　the　45#　steel　one　does;　in　the　case　of　the　same　pre-load,　the　former＇s　stiffness　increases　by　about　40%,　and　its　damping　increases　about　5-6　times.