Rh/gamma-Al2O3　and　Rh-Au/gamma-Al2O3　catalysts　were　prepared　by　the　ultrasound-assisted　membrane　reduction　(UAMR)　and　the　incipient　wetness　impregnation　(IMP)　methods.　The　properties　of　the　catalysts　for　three-way　catalytic　model　reactions　(CO　and　C3H8　oxidation,　CO　+　NO,　and　C3H6+NO+O-2)　were　investigated.　The　catalysts　were　characterized　by　inductively　coupled　plasma-optical　emission　spectrometry,　H-2-O-2　titration,　N-2　adsorption,　and　transmission　electron　microscopy.　The　metal　dispersion　of　the　Rh/gamma-Al2O3-UAMR　and　Rh-Au/gamma-Al2O3-UAMR　catalysts　was　45.3%　and　40.1%　with　the　metallic　surface　area　of　199.6　and　133.0　m(2)/g,　respectively,　and　the　average　metal　particle　size　was　smaller　than　3　nm.　Compared　with　Rh/gamma-Al2O3-IMP　and　Rh-Au/gamma-Al2O3-IMP,　the　Rh/gamma-Al2O3-UAMR　and　RhAu/gamma-Al2O3-UAMR　catalysts　possessed　much　higher　catalytic　activity　for　the　model　reactions.　However,　the　activity　of　the　Rh-Au/gamma-Al2O3-　UAMR　catalyst　was　higher　than　or　similar　to　that　of　the　Rh/gamma-Al2O3-IMP　for　the　model　reactions,　indicating　that　the　UAMR　is　a　promising　method　for　fabrication　of　three-way　catalysts.　The　catalysts　were　deactivated　to　some　extent　by　hydrothermal　pretreatment　at　1　000　degrees　C.