The　noble　metal　Ag　has　been　loaded　into　the　porous　zirconium　oxide　by　the　solution　-　phase　grafting　method　and　a　suitable　thermal　treatment.　The　X　-　ray　powder　diffraction,　HRTEM,　EDS,　FT　-　IR,　XPS　and　UV　-　vis　spectroscopy　were　adopted　for　the　characterization　of　the　products.　It　is　shown　that　the　dispersion　of　Ag　particles　is　seriously　influenced　by　the　thermal　treatment.　Ag　clusters　can　be　dispersed　homogeneously　into　the　channels　under　suitable　heat　treatment,　and　the　distinctive　host　-　guest　effect　has　been　detected.　However,　Ag　particles　may　diffuse　onto　the　external　pore　surface　with　the　increasing　of　the　treatment　temperature.