Au/13X　catalysts　were　prepared　via　the　impregnation　method,　using　the　organic　gold　compounds　Au(PPh3)(NO3)　and　the　inorganic　gold　compounds　HAuCl4　as　the　precursors,　respectively.　N-2　adsorption/desertion,　SEM-EDS,　XRD,　and　XPS　were　used　to　characterize　the　catalysts.　The　results　of　N-2　adsorption/desertion,　SEM-EDS　and　XRD　showed　that　the　Au　particles　uniformly　distributed　on　the　surface　of　Au/13X-Org,　while　the　Au　particles　clustered　on　that　for　Au/13X-Ino.　It　was　observed　by　XRD　and　SEM　that　the　mean　diameter　of　the　Au　particles　on　Au/13X-Ino　was　ca.　26.6　nm,　which　was　a　lot　bigger　than　that　on　Au/13X-Org　(＜5　nm).　The　CO　oxidations　have　been　studied　to　elucidate　the　catalytic　activity　of　the　samples.　It　was　found　that　Au/13X-Org　exhibited　30%　CO　conversion　at　25　degrees　C.　While,　for　Au/13X-Ino,　there　was　no　conversion　at　low　temperature.　The　temperature　of　the　complete　oxidation　of　CO　over　the　Au/13X-Org　was　150　degrees　C,　which　was　lower　than　that　over　the　Au/13X-Ino　(＞400　degrees　C).　The　different　activity　of　Au/13X-Org　and　Au/13X-Ino　maybe　attribute　to　two　reasons,　one　was　the　size　of　the　Au　particles,　and　the　other　was　the　existence　of　chlorine.　XPS　techniques　verified　that　the　Au　species　of　the　samples　was　only　metal　Au-0.