The　octahedral　molecular　sieve　(OMS-2)-supported　Ag　samples　were　prepared　by　the　pre-incorporation,　ion　exchange,　and　polyvinyl　alcohol　(PVA)-protecting　methods,　respectively.　The　XRD,　TEM,　BET,　H-2-TPR,　O-2-TPD,　and　FT-IR　techniques　were　used　to　investigate　effects　of　the　preparation　method　on　physicochemical　property　of　the　samples,　over　which　oxidation　of　ethyl　acetate　and　formaldehyde　was　used　as　probe　reactions.　It　is　found　that　catalytic　activity　was　dependent　on　physicochemical　property　of　the　sample,　and　decreased　in　the　order　of　Ag/OMS-2-PI　＞　Ag/OMS-2-IE　＞　Ag/OMS-2-PVA　＞　OMS-2.　The　Ag/OMS-2-PI　sample　performed　the　best:　theT(90)for　ethyl　acetate　and　formaldehyde　oxidation　was　200　and　170　degrees　C,　respectively.　The　Ag　species　in　Ag/OMS-2-PI　were　uniformly　distributed　in　the　pores　and　channels　of　the　OMS-2　support.　The　characterization　results　indicate　that　the　outstanding　catalytic　activity　of　Ag/OMS-2-PI　was　due　to　its　high　surface　Mn(3+)and　adsorbed　oxygen　species　concentrations,　good　low-temperature　reducibility,　and　the　largest　surface　area.