The　layered　manganese　oxide　(S-MnO2)-supported　reduced　graphene　oxide　(rGO)-promoted　silver　catalysts　(xAg-yrGO/delta-MnO2;　x　and　y　are　the　Ag　and　rGO　contents　(wt%),　respectively)　were　prepared　via　a　polyvinyl　alcohol-protected　reduction　route.　Physicochemical　properties　of　these　materials　were　determined　using　the　numerous　techniques,　and　their　catalytic　activities　were　evaluated　for　the　oxidation　of　CO　and　ethyl　acetate.　It　is　found　that　the　loading　of　rGO　as　an　electron　transfer　promoter　could　significantly　strengthen　the　metal-support　interaction　(SMSI)　between　Ag　and　delta-MnO2　and　increase　specific　surface　area　of　the　sample,　hence　improving　catalytic　performance　of　the　sample.　Activity　evaluation　reveals　that　1Ag-1.0rGO/delta-MnO2　showed　the　best　catalytic　activity　and　the　lowest　apparent　activation　energy　(E-a),　giving　a　T-90%　of　140　degrees　C　and　an　E-a　of　42.7　kJ/mol　for　CO　oxidation,　and　a　T-90%　of　160　degrees　C　and　an　E-a　of　39.8　kJ/mol　for　ethyl　acetate　oxidation　at　space　velocity　(SV)　=　60,000　mL/(g　h).　The　good　performance　of　1Ag-1.0rGO/S-MnO2　was　associated　with　its　high　Mn3+/Mn4+　or　O-ads/O-latt　molar　ratio,　good　low-temperature　reducibility,　and　strong　SMSI　between　Ag　and　delta-MnO2.　The　in　situ　DRIFTS　characterization　demonstrates　that　the　carbonate　and　acetate　species　were　the　main　intermediate　products　in　CO　and　ethyl　acetate　oxidation　over　1Ag-1.0rGO/delta-MnO2,　respectively.　The　1Ag-1.0rGO/delta-MnO2　sample　was　not　significantly　altered　in　physicochemical　property　after　55　h　of　stability　test,　but　its　activity　decreased　in　the　presence　of　water　vapor,　especially　such　an　effect　on　ethyl　acetate　oxidation　was　more　obvious,　which　was　possibly　due　to　the　competitive　adsorption　of　water　and　reactants　on　the　catalyst　surface.