Ru-based　catalysts　have　many　unique　properties,　especially　under　mild　conditions　such　as　law　temperature　and　pressure.　The　recent　developments　of　preparation　methods　and　application　of　nanometer　materials　supported　ruthenium　catalysts　were　reviewed.　The　effects　of　support　materials,　precursors,　and　ruthenium　nanometer　particles　on　the　performance　of　ruthenium　catalysts　were　briefly　summarized.　Then　the　new　preparation　techniques　and　new　progress　of　traditional　preparation　techniques　were　introduced　systematically,　and　the　shortages　of　some　methods　were　discussed.　Finally,　the　important　application　areas　and　catalytic　performance　of　Ru-based　supported　catalysts　were　discussed.　The　development　trends　of　Ru-based　catalysts　were　also　proposed.